The Bose QuietComfort 35 II are great headphones for commuting and traveling with a few improvements over the previous model. The redesign does not change much but adds a bit more functionality and a dedicated button for Google Assistant and to switch between noise canceling modes which is a welcomed addition. They're still super comfortable headphones with a very good sound quality and a versatile, easy-to-use design but unfortunately, they're also a bit leaky a bit at higher volumes.
The Bose QuietComfort 35 II have a decently versatile design that's easy-to-use and very comfortable. You can wear them for hours without any fatigue, thanks to the very soft padding on the ear cups. Their build, comfort level, portability, and case are pretty much identical to the original Bose QuietComfort 35 but their control scheme is a little different. They now have a dedicated button to switch between noise cancelling modes and to activate Google Assistant. It's a decent improvement, being able to turn off the noise-canceling and still use the headphones felt like a missing feature on the previous model. Unfortunately, they're still not the best headphones for the gym due to their slightly loose fit and over-ear design that's not as breathable for exercising or sports.
The Bose QC35 II look identical to the original QuietComfort 35 but with an additional button on the left ear cup. They have the same aesthetics, design, and button layout (for the rest of the controls) and come in the same color schemes at launch. The all-black model reviewed has a high-end yet understated appeal, but there is also a silver/grey alternative that is a bit more flashy without being tacky. There is no special edition variant yet, so you can't choose your own colors schemes like on the previous model.
The Bose QuietComfort 35 II are one of the most comfortable over-ears that we've tested so far, more comfortable than the Sony WH-1000XM3. They're not too tight on the head, the headband and ear cups are well-padded and they're lightweight. They have the same fit and weight as the original QC35 which you can wear for hours at a time and not feel any fatigue. Breathability may be an issue during long listening sessions but not comfort.
The Bose QC35 II have a slightly improved control scheme over the original QC35. They have an additional button on the left ear cup that will activate Google Assistant or switch between noise cancelling modes. The rest of the buttons though, are pretty much the same as on the previous model. They deliver great tactile feedback and the functionalities include: call/music, track-skipping, and volume controls. The buttons feel a little cramped on the bottom of the right ear cup but they're easy-to-use and you get accustomed to them fairly quickly.
The QuietComfort 35 II like the previous model do not have the most breathable design. They create a good seal around your ears which prevents a lot of airflow and will make you sweat a bit more than average when exercising. They will not be the most suitable headphones for intense work out routines. On the upside, they should be fine for more casual listening sessions, only making your ears warm after hours of use.
The Bose QuietComfort 35 Series II are mid-sized over-ears, which means they won't be the most portable headphones to carry around on your person. They fold into a more compact format, and the ear cups also lay flat to take less space. However, they're a bit too bulky to have them on you at all times.
The Bose QC35 II headphones come with the same sturdy, hard case of the previous model. It will protect the headphones from scratches, falls, and mild water damage. It also doesn't add much bulk and easily stores all the provided headphone accessories in a dedicated pocket within the case, unlike the QuietComfort 25.
The build quality the QC35 II is the same as the original model. The plastic used for the ear cups is dense and should be able to handle a few drops without getting damaged. The headband is decently flexible and has a metal frame to reinforce the build which makes them a bit more durable. However, they still have a lot of plastic in their design, which is decently durable but feels a bit cheap for their price range, especially when compared to other headphones like the Parrot Zik 3.0, the Oppo PM-3, B&O PLAY H9i or the Audio-Technica ATH-DSR9BT.
The Bose QuietComfort 35 Series 2 are decently stable but not tight enough on the head to be suitable for more intense exercises. The ear cups, sway a little when exercising but thanks to the wireless design, you don't have to worry about the audio cable getting caught on something and yanking the headphones off your head.
The Bose QuietComfort 35 Series II are a very good sounding pair of closed-back over-ear headphones (they are one of the best closed-back headphones we've tested). They sound nearly identical to the older model. Their bass is consistent and deep, with just the right amount of thump and punch. This makes them very versatile and suitable for all types of content from classical, to Dubstep, to podcasts. They also have very well-balanced mid and trebles ranges, although some may find them a tad too emphasized on vocals and leads. They also have great imaging, but like most other closed-back headphones, their soundstage is not speaker-like and out-of-head.
The bass of the Bose QC35 II is excellent. LFE (low-frequency extension) is at 10Hz, which is great. Low-bass is quite flat and over our target by about 2dB. This indicates a deep and thumpy bass, capable of producing the low rumbling sounds common to EDM, hip-hop, dubstep and film scores. Additionally, mid-bass and high-bass are also flat and within 2dB of our target.
The Bose QuietComfort 35 Series 2 have a great mid-range. The range's response is virtually flat and within 1dB of our target, which is remarkable. The deviation from our target in high-mid is very subtle, but could make the vocals and lead instruments a tad forward sounding. Overall, their mid-range is very well-balanced, ensuring a clear reproduction of vocals and lead instruments.
The treble of the Bose QC35 II is very good. The response is rather uneven, but its effect will be negligible. Low-treble is with 0.35dB of our target, and mid-treble within 2.6dB. Overall, they have a detailed treble with just the right amount of presence, which is critical for a good reproduction of vocals, leads, and cymbals.
The Bose QC35 II have a good frequency response consistency. In the bass range, they seem to be using their ANC (active noise cancelling) to check for seal and ensuring proper bass delivery. They tend to perform very consistently even on users who wear glasses. In the treble range (below 10KHz), the maximum amount of deviation is about 6dB, which is good, but the positioning of the headphones on the head can definitely have a small effect on their perceived brightness.
The Bose QuietComfort 35 II have excellent imaging. Their weighted group delay is 0.1, which is among the lowest we have measured. The graph also shows that virtually the entire group delay is below our audibility threshold. The spike in group delay in high-treble, and the mis-match in group delay in low-bass, although not ideal should not have a perceptible effect. There was also some mismatch between the L/R drivers of our test unit, especially in frequency and phase response, but their effect won't be very noticeable either. Overall, they have a tight bass and a transparent treble, along with an accurate placement of objects (voice, instruments, footsteps) in the stereo image.
The soundstage of the Bose QuietComfort 35 II is sub-par. They show a decent amount of PRTF accuracy and activation (Size), which should translate into a relatively large and natural sounding soundstage. However, their PRTF Distance score is below-average, suggesting a soundstage that is perceived to be located inside-the-head, as opposed to in-front. Also, because of the closed-back design and ANC, they tend to sound less open than open-back headphones.
Average harmonic distortion performance. The overall amount of harmonic distortion is low and within good limits. It also doesn't change too much under heavier loads. However, the right driver of our test unit shows considerably more distortion than the left driver, which although negligible, is not ideal. Also, the peak in THD around 1.5KHz, could make the sound of the region a bit harsh and brittle.
The Bose QuietComfort 35 II have an excellent noise isolation performance. They have one of the best active noise-canceling that we've measured, which makes them great headphones for commuters and frequent flyers. They will easily cancel the noisy engine of a bus or train ride and are also great at reducing the ambient chatter in a busy office. Unfortunately, they leak quite a bit and would be distracting to the people around you at moderate volumes, which is not ideal for quieter environments.
The ANC (active noise cancellation) of the Bose QC35 II is remarkable, and nearly identical to that of the older model. In the bass range, where the rumble of airplane and bus engines sit, they achieve more than 20dB of isolation, which is one of the highest we have measured. In the mid-range, important for cancelling out speech, they get 25dB of isolation, which is great. They also achieve a good 35dB of isolation in the treble range, which is occupied by sharp sounds such as S and Ts.
The leakage performance of the Bose QC 35 II is average. The majority of their leakage is in the mid-range, between 400Hz and 3KHz. This means that their leakage will sound fuller and more distracting than that of in-ears and earbuds. So although the overall level of their leakage is not very loud, people around you will be able to hear your music if you blast it, even in moderately noisy places like a bus. If you like to listen at high volumes, take a look at the less leaky Jabra Elite 85h.
The performance of the Bose QuietComfort 35 II's integrated microphone is mediocre. Speech recorded/transmitted with the mic will sound thin and noticeably muffled. This could make understanding the speech a bit difficult. They also don't fare well in noisy environments and will struggle to separate speech from background noise even in moderately loud environments, such as a busy street.
The recording quality of the Bose QC35 II's integrated microphone is sub-par. LFE (low-frequency extension) is at 315Hz, which means transmitted/recorded speech with these headphones will sound noticeably thin. The HFE (high-frequency extension) of 2.1KHz, indicates a muffled and lacking speech transmission. This will have a negative effect on the intelligibility of speech.
Update: 18/03/2019: Thanks to user feedback we've noticed that noise floor of the QC35 II when using call enabled apps on PC and Mac, like Skype or Slack , is quite a bit higher than other Bluetooth headphones like the Plantronics BackBeat Pro 2 or Dolby Dimension. This seems most likely due to higher than average mic feedback on the Bose headset although we also noticed that on more recent MacBook Pros there was a high pitched tone before the mic feedback/noise kicked in. This was not the case when tested this with an iMac, PC or phone. We've created a discussion thread below where you can contribute if you have been experiencing similar issues with your Bose headset on a MacBook Pro.
The noise handling of the mic is mediocre. In our SpNR test, it achieved a speech-to-noise ratio of about 16dB, which is below average. This makes this microphone suitable mostly for quiet environments, and not great for moderate and loud environments.
The Bose QuietComfort 35 Series II have a great battery life but a mediocre app. They lasted a bit longer than the original model, at 20 hours of continuous playback for about the same charge time. You can almost double the battery life if you do not use noise-canceling and they turn off automatically after a set time if nothing is playing, which is a great power saving feature. Unfortunately, although the app has been improved via firmware updates, it still feels a little lacking when compared to other headphones like the Sony WH-1000XM2 or the Sennheiser PXC 550 Wireless.
The Bose QC35 II have a great battery life, that's slightly better than the original QC35. They're suitable headphones for long flights or road trips, and they have an adjustable timer that helps prolong the battery life. Unfortunately, you can't use them while they're charging although they do not take too long to fully charge.
The Bose Connect app is sleek but only offers a minimal list of features. It allows you to connect, rename, and update the QC35 II but doesn't provide you with an equalizer. On the upside, the app offers a good auto-off timer that you can set at different intervals. You also get a limited in-app player and the battery level status as well as being able to select from different noise cancelling profiles (High, Low and off). It's decent but not as customizable as the Sony| Headphones Connect app or the Sennheiser Captune app.
The Bose QuietComfort 35 II, like the previous model, are a Bluetooth headset that can pair simultaneously with multiple devices, supports NFC and comes with a regular audio cable. They have a slightly improved wireless range but a worse latency performance than the original model. This makes them a bit worse for watching videos but it's not a huge difference and won't be noticeable for most. They both won't be ideal for watching movies or gaming and only come with a regular audio cable that does not have an inline microphone.
The Bose QC35 II headphones can pair simultaneously with 2 devices and support NFC. Like the other wireless Bose models, they have an easy-to-pair power switch that can be quickly toggled to put the headphones in pairing mode. They also keep the last sync devices in memory for automatic pairing when you turn the headphones on. They're one of the best Bluetooth headphones we've tested.
The Bose QC35 II come with a simple audio cable with no in-line remote or USB adapter. This means they do not have a mic that is compatible with consoles. The cable is also a 1/8TRS to 1/16TRS connector which is not as easily available as more standard Aux cable.
The Bose QC 35 II headphones do not have a base/dock. If you want an equally great sounding headphone with a dock/base for watching movies and gaming, check out the Astro A50.
The Bose QuietComfort 35 II have a very good wireless range that's slightly better than the previous model. They maintained a stable connection up to 41ft, and have a decent line-of-sight range of 122ft. This makes them a solid option for moderately sized offices but their range is not as good as the Beats Studio3 Wireless or the Microsoft Surface Headphones.
The Bose QC35 II have about 30ms more latency than the original QuietComfort 35. It's not a very noticeable difference but since they have no additional low latency codecs, they won't be the ideal headphones for watching videos or gaming. If you need to watch movies, either use them wired or get the Audio-Technica ATH-M50x for their wired connection and good sound.
The Bose QuietComfort 35 II are a minor update to the Bose QuietComfort 35 with a better control scheme. You now have a bit more control over the noise cancellation even without the app and you get Google Assitant built-in. They're the best wireless over-ear headphones we've tested and one of the best noise-canceling headphones with a comfortable, easy-to-use design and a very good sound. However, they do not look as high-end compared to other headphones in their price range and their sound can't be customized like some of the competing models. They also tend to be a bit leaky at higher volumes.
The differences between the Bose QuietComfort 35 and the Bose QuietComfort 35 II are minimal. The new model now has a dedicated ANC button, which you can also map for voice-enabled controls. Overall, if you always want your ANC on at max level and don’t use your device’s voice assistant, there is practically no reason to get the QC 35 II. However, both models are still often found online at the same price, so you might as well get the newer QC 35 II which has a few more features with the latest updates.
The Bose QuietComfort 35 II are a better more versatile headset than the Bowers & Wilkins PX. The Bose have a more comfortable over-ear fit than the PX. They also have a better-balanced sound out of the box that is a bit more consistent than the PX regardless of noise cancelation profile. The PX, on the other hand, have a better build quality that feels more in line with their price range. They also leak a little less, which makes them a bit more suitable for noise sensitive environments like being at the office.
The Bose QuietComfort 35 II have similar performance to the Sony WH-1000XM3. The Bose are a bit more comfortable than the Sonys. They also have a slightly better default sound that does not have as much high bass as the WH-1000XM3, which makes them sound a tad bit more balanced overall. They also have an easier to use control scheme and can pair with multiple devices at once, which makes them a bit easier to use with your PC and your phone. On the other hand, the Sony are a lot more customizable than the Bose. They come with an excellent app that gives you access to a good EQ, noise canceling options and optimization, an in-app player, room effects, and codec options. The Sony also have a longer battery life with a better quick charge feature. Get the Bose if comfort is most important and you typically use headphone companion apps. However, if you like to tweak your audio and want more features, the Sony are the better option.
The Bose QuietComfort 35 II are bit better than the Sennheiser PXC 550 Wireless overall. The Bose have an easier to use control scheme and a more comfortable over-ear fit. They also have better noise cancellation and a more exciting sound that packs a more bass than the default Sennheiser sound profile. On the upside, the PXC 550 Wireless are a lot more customizable than the Bose. Their app gives them a lot more control over their audio reproduction than the QC 35 II, so you can EQ them to match your listening preference, even on individual tracks. They also have a longer list of features than the Bose and more connection options.
The Bose QuietComfort 35 II are a better noise canceling wireless headset than the Plantronics BackBeat Pro 2. The QC 35 II are lighter, more comfortable, and have a better-balanced sound than the Plantronics. They also have a much more efficient noise canceling feature, which makes them more suitable for commute and travel than the BackBeat Pro 2. On the upside, the Plantronics have a better battery life, wireless range, and controls. They also have a more exciting sound that packs a deeper bass, which some may prefer over the Bose.
The Bose QuietComfort 35 II are a better headphone overall than the Sony WH-1000XM2. The Bose have an easier-to-use, lightweight, and more comfortable over-ear fit than the Sonys. The QC 35 II also have a better sound quality that packs an equal amount of bass as the WH-1000XM2 but sounds a bit clearer with instruments and vocals thanks to their better balanced mid and treble ranges. The Sonys, on the other hand, have a bit more features and support multiple high-quality audio codecs that we haven't had the chance to test yet. They also look more premium and have an equally good, if not better, noise cancelling performance.
If you need noise cancelation for commuting, then go for the Bose QuietComfort 35 II. However, if you do not need the added isolation, then the Bose SoundLink Around-Ear II have the same design without the ANC. The QC 35 II are a more versatile option than the SoundLink since their noise cancelation makes them a bit better suited for commute and travel. The QC 35 II also have a slightly more pronounced bass that will sound more exciting on tracks than the Bose. On the upside, the SoundLink offer a better value for your money if you do not need a noise canceling headphone. They're also a bit lighter, so they might be a tad more comfortable for some.
The Bose QuietComfort 35 II are a wireless upgrade to the Bose QuietComfort 25. QC 35 II have the same feel and fit as the QC 20s, so they are just as comfortable. They also cancel noise just as well as the QC 20 but have a bit more self-noise. They are slightly better built, and since they are wireless and can be used wired, they're more versatile than the QC 20. On the other hand, the QC 20 offer a better value for your money if you do not need a wireless headphone. They also have no latency when watching movies but you can always use the QC 35 II wired and have the same experience. The QC 20 have a longer battery life overall, but use AA batteries. This may be a deal breaker for some, but an advantage for others since you do not have to charge them.
The Bose QuietComfort 35 II are better headphones than the JBL E65BTNC. They have better neutral sound quality and their noise cancelling feature is one of the best we’ve tested so far. They are also one of the most comfortable headphones we’ve reviewed. On the other hand, the JBLs have better wireless range and feel more stable since they have higher clamping force on the head, which can be useful during physical activity. They also have an in-line microphone that the QC 35 II lack.
The Bose QuietComfort 35 II are better headphones than the Microsoft Surface Headphones. They have a more neutral sounding frequency response, are one of the most comfortable headphones we’ve reviewed so far, and also have a better noise cancellation feature. However, they don’t have the satisfying and touch-sensitive control scheme of the Surface Headphones, leak more, and don’t have a companion app for additional customization options.
The Bose QuietComfort 35 II are much better wireless noise-canceling headphones overall than the Sony WH-H900N. The Bose have a more comfortable and easier to use design with tactile controls and lightweight, well-padded ear cups. They also have a much better noise canceling performance than the WH-H900N, so they will isolate you better in noisy conditions. The Sony WH-H900N, on the other hand, have as good a sound quality as the Bose, but you can EQ them thanks to their better and more customizable app support. The Sony also have a sleek looking premium design that some may prefer over the Bose.
The Bose QuietComfort 35 II are better noise canceling headphones than the Sennheiser HD 4.50 BTNC. The QC 35 II isolate much better in noisy conditions with a more efficient noise canceling feature that's excellent for commute and travel. They're also a lot more comfortable to wear for long listening sessions and have a more balanced sound quality than the Sennheisers, although, unlike the HD 4.50, they do not come with an EQ in their app. This means that the HD 4.50 are a lot more customizable, which some listeners may prefer. They also have a more stable fit, making them slightly better-suited for physical activity if you like working out and running with over-ears instead of in-ears.
The Bose QuietComfort 35 II are a better and more versatile headphone than the Sennheiser Momentum 2.0 Wireless. The Bose are more comfortable, sound better out of the box, have a better battery performance, and they cancel more noise with their ANC then the HD1s. On the upside, the Sennheisers leak a lot less, which makes them a slightly better option to use in noise-sensitive environments like being at the office.
The Bose QuietComfort 35 II are better headphones than the B&O PLAY H9 in pretty much every way. They are more versatile thanks to their amazing ANC feature, and their sound is noticeably more neutral. The QC 35 II are one of the most comfortable headphones we’ve reviewed so far and are well-built, but aren’t quite on par with the premium design and build quality of the B&O PLAY H9. The H9 also has slightly less battery life, but it can be used while charging, which you can’t do with the Bose.
For everyday casual use, the Bose QuietComfort 35 II are a better option than the Jaybird X4 Wireless. Their over-ear fit is more comfortable, and they are also noise cancelling headphones, which will be better suited for commuting. They sound good, but you don’t have an EQ like the X4 inside their app. Also, the Jaybird are more portable and will be a better option than the QC 35 II if you’re looking for sports headphones.
The Bose QuietComfort 35 II are better headphones than the Skullcandy Venue. Their noise canceling feature is better, and they have a more neutral sound than the Venue. They are also one of the most comfortable headphones we’ve reviewed so far and are better-built. However, the battery life is slightly better on the Skullcandy Venue, and they have better wireless range. They are also not as expensive as the premium QC 35 II.
The Bose QuietComfort 35 II are better than the Cowin SE7 in pretty much every category. They are one of the most comfortable headphones we’ve reviewed so far, their ANC feature blocks an impressive amount of ambient noise, and they have a great audio reproduction. They have longer battery life and will be a more versatile pair of headphones than the Cowins. The Cowin have the edge in wireless range by a few feet, but they do have noticeably lower latency issues. They are also quite cheaper than the QC 35 II.
The Bose QuietComfort 35 II are better headphones than the AKG N700NC. They are one of the most comfortable headphones we’ve ever tested, and they have better noise isolation. Both headphones have a neutral sound, but the AKGs do have an EQ in their compatible app to customize the sound to your liking, which the QC 35 II lacks. However, you can connect the Bose QC 35 II to 2 devices simultaneously which can be convenient.
The Bose QuietComfort 35 II are a better wireless headphone if you prefer over-ears; however, if you want a more portable on-ear design, then go for the Beats Solo3 Wireless. The Bose are more comfortable, and most will prefer their over-ear fit compared to the on-ear design of the Beats Solo3. The QC 35 are also noise-canceling headphones that will isolate you better on noisy commutes and long flights. On the upside, the Beats Solo3 Wireless have a more portable on-ear design and are more stable for the gym. They also have a better wireless range and a longer battery life than the Bose.
The Bose QuietComfort 35 II are a better headphone than the Sony MDR-1000X. The Bose have an easier-to-use, lightweight, and more comfortable over-ear fit than the Sonys. The QC 35 II also have a better sound quality that packs a bit more bass than the MDR-1000X and sounds a bit clearer with instruments and vocals. The Sonys, on the other hand, have more features and support multiple high-quality audio codecs that we haven't had the chance to test yet. They also look more premium and have an equally good and more optimized noise-canceling performance.
The Bose QuietComfort 35 II are a much better noise canceling headset than the Denon AHGC20 Globe Cruiser. The Bose have a more comfortable over-ear fit and a better noise cancellation feature that makes them a bit more suitable for travel and commuting than the Denons. The Bose also have a much better sound quality than the AHGC20, which sound poorly balanced, dark, and too bass-heavy. On the upside, the Globe Cruisers have a better build quality than the Bose. They also have a longer battery life and a more premium look and feel.
If you just need a budget wired headset then the Marshall Major II could be a viable option but in most cases, the wireless noise-canceling Bose QuietComfort 35 II are a much better and more versatile headset. The Bose block a lot of noise with their noise cancelling feature which makes them more suitable for commute and travel. They're also a lot more comfortable and a have an over-ear fit that most will prefer over the on-ear design of the Marshall Major II. The Major II, on the other hand, are completely passive, so you do not have to worry about battery life. They're also a bit more compact to carry around than the Bose but do not come with a case.
The Bose QuietComfort 35 II are better mixed usage headphones than the Jabra Elite 85h due to their amazing noise cancelling performance. They will be better suited for commuting as they block out more low-end noises like engine rumbles. On the other hand, the Jabra Elite 85h feel slightly better built than the Bose, and their control scheme is more complete. They also have noticeably better wireless range and aren’t as leaky as the QC 35 II.
The Bose QuietComfort 35 II are better headphones than the Anker SoundCore Space NC. They are one of the best noise-canceling headphones we’ve tested so far, and they have an excellent design with a very comfortable fit. They also have a neutral audio reproduction that will be suited for a wider variety of music genres than the Ankers’ dark and thumpy sound quality. On the other hand, the SoundCore Space NC have an in-line microphone that we expect to perform better than the integrated ones, and their latency is lower than most Bluetooth headphones. They are also less expensive, and fans of bass-heavy music might even prefer them.
The Bose QuietComfort 35 II are a much better headphone than the Sennheiser Momentum 2.0. However, since the Bose are wireless and noise canceling, they're not really comparable to the Sennheisers. The QC 35 II are a lot more suitable for commuting and traveling than the Sennheisers since they have better noise isolation thanks to their ANC feature. They also have more range than the Sennheisers, and they sound better with a more balanced representation of the treble range than the Sennheisers. The Bose are also a lot more comfortable, too. On the other hand, since the Sennheisers are wired, they have no latency when watching videos. However, you can also use the Bose with the provided audio cable for the same use case.
The Bose QuietComfort 35 II are better headphones than the B&O PLAY H9i. Their ANC blocks way more ambient noise and their ear cups are more comfortable than the H9i’s. Also, the sound quality of the Bose QC 35 II is very good and follows our target curve better. However, they can get a bit leaky at high volumes. Also, the high-end metal build quality of the H9i surpasses the QC 35 II. You also get a few hours more of battery life on the B&O headphones. The H9i’s app allows for better customization, too.
The Bose QuietComfort 35 II are better and more versatile headphones than the Audio-Technica ATH-DSR9BT thanks to very comfortable fit and great sound quality. They are also one of the best noise cancelling headphones we’ve reviewed so far, making them suitable for commuting as well. They offer more battery life and take less time to fully charge and you can also use them wired with a phone, even if the battery is dead. On the other hand, the premium materials used for the Audio-Technica are superior to that off the Bose QC 35 II, but overall the Bose offers a better value.
The Bose Quiet Comfort 35 II are a better wireless noise-canceling headset than the Samsung Level Over Wireless. The QC 35 II are smaller and easier to carry around, even if they are not the most portable headphones. They're also a lot more comfortable to wear for long listening sessions and have a much better noise cancellation feature than the Samsung. The Samsung Level Over Wireless, on the other hand, have a customizable sound quality thanks to their better app than that of the Bose. They also leak a little less, which makes them a bit more suitable for quieter conditions.
The Bose QuietComfort 35 II are a much better headphone than the Sennheiser Momentum 2.0 On-Ear. However, since the Bose are wireless and noise cancelling, they're not really comparable to the Sennheisers. The QC 35 II are a lot more suitable for commuting and traveling than the On-Ear, since they have better noise isolation thanks to their ANC feature. They also have a more range than the Sennheisers since they're wireless, and they sound better with a more balanced representation of the treble ranges. The Bose are also a lot more comfortable, too. On the other hand, since the Sennheisers are wired, they have no latency when watching videos. However, you can also use the Bose with the provided audio cable for the same use case.
The Bose QuietComfort 35 II are much better noise canceling headphone than the Plantronics Backbeat Pro. The Bose are a lot more comfortable, so you can wear them for longer than the Plantronics. They also have a much better noise canceling feature that isolates well enough for most noisy environments, so they're a great choice for commute and travel. The Bose also have a better-balanced sound that still packs quite a lot of bass. The Plantronics, on the other hand, have a better control scheme, a slightly longer battery life, and wireless range. The Backbeat Pro are also a lot cheaper.