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Reviewed on Jul 26, 2019

Vizio M Series Quantum 2019
TV REVIEW

Usage Ratings - Version 1.3
8.1
Mixed Usage
Value for price beaten by
: none
8.2
Movies
7.6
TV Shows
7.8
Sports
8.8
Video Games
8.4
HDR Movies
8.8
HDR Gaming
8.4
PC Monitor
Type : LED
Sub-Type
:
VA
Resolution : 4k

The Vizio M Series Quantum 2019 is a great 4k TV with a VA panel. It delivers great picture quality, with deep, uniform blacks, an outstanding color gamut, very good gradient handling, and decent HDR peak brightness. It has good overall motion handling with an excellent response time, but the backlight isn't flicker-free and it doesn't have a motion interpolation feature. Unfortunately, like most TVs with VA panels, the image degrades when viewed at an angle, and it has noticeable uniformity issues.

Pros
  • Deep, uniform blacks.
  • Impressive color gamut.
  • Excellent low input lag.
Cons
  • Mediocre dirty screen effect (DSE).

Test Results
Design 7.0
Picture Quality 8.1
Motion 7.6
Inputs 8.9
Sound Quality 6.9
Smart Features 6.8

Check Price

Market Context

The Vizio M Series Quantum is a mid-range 4k Vizio TV, and it directly replaces the Vizio M Series 2018. It's available in two variants: the M**7 variant, and the M**8 variant. The M Series Quantum's main competitors are the Samsung RU8000, Sony X850F, and LG SM8600.

7.0

Design

Curved : No

The Vizio M Series Quantum has a decent design. The borders and frame are thin, and it doesn't stick out much when wall-mounted. It has a minimalist stand that supports the TV well, but doesn't completely prevent the TV from wobbling and it requires a large table.

Stand

The feet are wide and require a table nearly the full width of the TV, which isn't ideal, especially for the larger sizes.

Footprint of the 65" stand: 50.6" x 11.7"

Back
Wall Mount : VESA 400x200

The back of the TV is very plain, and looks very similar to last year's M Series 2018, but with an all-black finish. The inputs face towards the side and bottom of the TV, and are easy to access when wall-mounted.

Unfortunately, there is no cable management.

Borders
Borders : 0.51" (1.3 cm)

The borders of the TV are a bit thicker than last year's model, but still aren't very distracting.

Thickness
Max Thickness : 2.87" (7.3 cm)

The 2019 model is a bit thicker than last year's model, but still looks good. There is a slight backwards lean, but this isn't very noticeable. We don't know if this is by design, or a defect. The M Series 2018 did not have a tilt.

Temperature
Maximum Temperature
:
92 °F (33 °C)
Average Temperature
:
89 °F (32 °C)

There should be no issues with heat from the M Series Quantum. Note that this image was taken with a different thermal camera, as our FLIR E8 is currently being repaired.

7.0 Build Quality

The Vizio M Series Quantum has decent build quality. It's very similar to other Vizio TVs, and the exterior panels are made of plastic. The stand supports the TV well, but it still wobbles a bit. There is a slight backwards tilt; this isn't very noticeable with normal viewing, and we don't know if this is a defect or by design.

8.1

Picture Quality

The Vizio M Series Quantum delivers great picture quality. It looks great in a dark room, as the impressive contrast ratio and good local dimming features delivers deep, inky blacks. It also has an outstanding color gamut, with Rec. 2020 coverage that is almost as good as the Vizio P Series Quantum X 2019, and great gradient performance, with very little banding in areas of similar color. In SDR, the M658-G1 has great peak brightness, but in HDR it isn't bright enough to deliver the creator's intent. Unfortunately, like most TVs with VA panels, the image degrades when viewed at an angle, and our unit has noticeable uniformity issues.

9.4 Contrast
Native Contrast
:
7000 : 1
Contrast with local dimming
:
9815 : 1

The M Series Quantum has an outstanding native contrast ratio, similar to the Vizio V Series 2019. This results in excellent deep blacks, great for dark-room viewing. With local dimming enabled, the contrast ratio is boosted significantly, similar to the Samsung Q70R.

7.5 Local Dimming
Local Dimming
:
Yes
Backlight
:
Full-Array

The M Series Quantum has a good local dimming feature, slightly better than the Q70R but not quite as good as the P Series Quantum 2018. It reacts decently well to fast scene changes, but the leading edge and some small, bright objects can appear dimmer than the rest.

Higher settings on the TV cause the TV's overall brightness to increase. Although we normally recommend the 'Medium' setting, it might be too bright for some environments, in which case the 'Low' setting might be better.

Note that the M**7 variants (M507-G1, M557-G0, M657-G0) have a more limited local dimming feature, with between 12 and 20 dimming zones. We don't know for sure how it performs, though.

8.1 SDR Peak Brightness
SDR Real Scene Peak Brightness
:
364 cd/m²
SDR Peak 2% Window
:
325 cd/m²
SDR Peak 10% Window
:
487 cd/m²
SDR Peak 25% Window
:
476 cd/m²
SDR Peak 50% Window
:
414 cd/m²
SDR Peak 100% Window
:
345 cd/m²
SDR Sustained 2% Window
:
322 cd/m²
SDR Sustained 10% Window
:
479 cd/m²
SDR Sustained 25% Window
:
472 cd/m²
SDR Sustained 50% Window
:
407 cd/m²
SDR Sustained 100% Window
:
345 cd/m²
SDR ABL
:
0.026

The Vizio M658-G1 has great peak brightness, but it isn't quite as bright as the M Series 2018. There is some variation in brightness with different content (ABL), but it shouldn't cause any issues for most people.

We measured the peak brightness after calibration, with the 'Calibrated Dark' Picture Mode, and the Color Temperature set to 'Normal'.

The local dimming feature affects the TV's peak brightness, and higher settings result in a higher peak brightness. We measured the peak brightness with the Active Full Array setting on 'Medium'. Lower settings result in a lower peak brightness, so you may need to adjust this setting depending on your viewing conditions. The 'High' setting resulted in a dimmer image with some real content.

If you prefer a brighter image, or a colder color temperature over an accurate one, with the 'Vivid' Picture Mode and the 'Cool' Color Temperature, we measured a peak brightness of 634 cd/m² for a short period of time, as measured on the 10% test window.

Note that the M**7 variants are advertised with a lower peak brightness. We don't know how bright they actually are.

6.7 HDR Peak Brightness
HDR Real Scene Peak Brightness
:
387 cd/m²
HDR Peak 2% Window
:
322 cd/m²
HDR Peak 10% Window
:
481 cd/m²
HDR Peak 25% Window
:
472 cd/m²
HDR Peak 50% Window
:
412 cd/m²
HDR Peak 100% Window
:
344 cd/m²
HDR Sustained 2% Window
:
319 cd/m²
HDR Sustained 10% Window
:
474 cd/m²
HDR Sustained 25% Window
:
468 cd/m²
HDR Sustained 50% Window
:
405 cd/m²
HDR Sustained 100% Window
:
343 cd/m²
HDR ABL
:
0.026

Decent peak HDR brightness, slightly worse than last year's models.

We tested the HDR peak brightness with no calibration settings, using the 'Calibrated Dark' Picture Mode, with the Backlight set to '50'.

The local dimming feature affects the TV's peak brightness, and higher settings result in a higher peak brightness. We measured the peak brightness with the Active Full Array setting on 'Medium'. Lower settings result in a lower peak brightness, so you may need to adjust this setting depending on your viewing conditions. The 'High' setting resulted in a dimmer image with some real content.

If accuracy isn't as important to you, or if you prefer a colder color temperature, the 'Vivid' Picture Mode hit a peak brightness of 581 cd/m² for a short period of time, with the Backlight set to '100', Color Temperature set to 'cool', and local dimming on 'High'.

Note that the M**7 variants are advertised with a lower peak brightness. We don't know how bright they actually are.

7.0 Gray Uniformity
50% Std. Dev.
:
2.459 %
50% DSE
:
0.214 %
5% Std. Dev.
:
1.297 %
5% DSE
:
0.135 %

Decent gray uniformity. Subjectively, it looks worse than the current score. There are noticeable vertical bands throughout the entire screen, which can be very distracting with some content. These results are closer to the TCL R617, but with less vignetting.

5.5 Viewing Angle
Color Washout
:
23 °
Color Shift
:
22 °
Brightness Loss
:
28 °
Black Level Raise
:
42 °
Gamma Shift
:
16 °

Like most VA panels, the M Series Quantum 2019 has disappointing viewing angles. When viewing off-angle, the image appears washed out and colors shift noticeably and lose accuracy.

Unlike the P Series Quantum X 2019, there is no Enhanced Viewing Angle feature.

9.7 Black Uniformity
Native Std. Dev.
:
0.436 %
Std. Dev. w/ L.D.
:
0.537 %

This TV has outstanding black uniformity, one of the best we've seen so far. There is almost no noticeable blooming around our test cross, and no backlight bleed.

8.0 Reflections
Screen Finish
:
Semi-gloss
Total Reflections
:
5.1 %
Indirect Reflections
:
0.5 %

The M Series Quantum 2019 has great reflection handling. Bright light sources aren't completely diffused across the screen, so bright lights or windows opposite the TV can still be distracting.

7.6 Pre Calibration
White Balance dE
:
3.31
Color dE
:
2.43
Gamma
:
2.10
Color Temperature
:
5991 K
Picture Mode
:
Calibrated Dark
Color Temp Setting
:
Normal
Gamma Setting
:
2.2

With our pre-calibration settings, the M Series Quantum 2019 has good accuracy. Gamma mostly follows the target curve, but some really bright scenes are noticeably over-brightened. There are some minor inaccuracies in colors, but most people won't notice anything. The color temperature is warm, giving the white point a slight red-yellow tint.

9.7 Post Calibration
White Balance dE
:
0.23
Color dE
:
0.82
Gamma
:
2.19
Color Temperature
:
6514 K
White Balance Calibration
:
11 point
Color Calibration
:
Yes
Auto-Calibration Function
:
No

After calibration, this TV has excellent accuracy. Gamma follows the target perfectly, with almost no variation from 2.2. Color errors are almost completely corrected, and any remaining inaccuracies are completely unnoticeable. The color temperature is extremely close to our target of 6500 K, and the white balance is essentially perfect.

You can see our recommended settings here.

7.0 480p Input

Like all recent Vizio TVs we've tested, 480p content, like DVDs, isn't upscaled as well as most TVs. Not everyone will be bothered by this, but it can be noticeable.

7.0 720p Input

720p content, like most cable channels, is decently upscaled, but like with 480p content, it's a bit worse than most other TVs.

9.0 1080p Input

1080p content, like Blu-rays or older consoles is upscaled nearly perfectly, and looks almost identical to 4k content.

10 4k Input

4k content is displayed perfectly, with no pixel issues or sub-pixel dimming. Unlike the higher-end Vizio TVs, like the P Series Quantum X 2019, there is no Enhanced Viewing Angle feature, so there is no spatial dithering.

8.9 Color Gamut
Wide Color Gamut
:
Yes
DCI P3 xy
:
97.66 %
DCI P3 uv
:
98.55 %
Rec 2020 xy
:
79.17 %
Rec 2020 uv
:
81.28 %

The Vizio M Series Quantum 2019 has an impressive color gamut, one of the widest we've ever measured.

The EOTF doesn't follow the PQ Curve very well. Darker scenes are displayed accurately, but it starts tone mapping very early, and all scenes above around 100 cd/m² appear darker than they should be. In 'Game' mode, the backlight defaults to '100', which causes the EOTF to display darker scenes brighter than they should be, as shown by this EOTF. With the backlight set to '50', the EOTF more closely tracks the PQ curve.

If you find HDR too dim, changing the Backlight to '100' results in a brighter image, as shown by this EOTF. If you want an even brighter image, decreasing the gamma will probably improve the brightness a bit more, but we don't expect it to impact the apparent brightness as much as the backlight setting.

8.2 Color Volume
Normalized DCI P3 Coverage ITP
:
88.9 %
10,000 cd/m² DCI P3 Coverage ITP
:
37.4 %
Normalized Rec 2020 Coverage ITP
:
76.0 %
10,000 cd/m² Rec 2020 Coverage ITP
:
31.4 %

This TV has great color volume, again, one of the best we've tested. It can't quite fill out its color gamut, but can display most colors at any brightness level, including dark, saturated colors.

8.3 Gradient
Color Depth
:
10 Bit
Red (Std. Dev.)
:
0.109 dE
Green (Std. Dev.)
:
0.116 dE
Blue (Std. Dev.)
:
0.083 dE
Gray (Std. Dev.)
:
0.088 dE

This TV has great gradient handling. There is some noticeable banding in most colors, but it isn't very noticeable. Unfortunately, there is no smooth gradation feature to improve gradients.

10 Temporary Image Retention
IR after 0 min recovery
:
0.00 %
IR after 2 min recovery
:
0.00 %
IR after 4 min recovery
:
0.00 %
IR after 6 min recovery
:
0.00 %
IR after 8 min recovery
:
0.00 %
IR after 10 min recovery
:
0.00 %

There are no signs of temporary image retention on the M Series Quantum 2019, even immediately after displaying our high-contrast static test image for 10 minutes.

10 Permanent Burn-In Risk
Permanent Burn-In Risk
:
No

We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.

Pixels
7.6

Motion

The Vizio M Series Quantum 2019 has good motion handling. It has an excellent response time, delivering clear motion with very little blur behind fast-moving objects. There are noticeable duplications, though, due to the TV's 480Hz backlight flicker, which is present at all brightness levels below max. This TV has an optional black frame insertion feature, which improves the appearance of motion by reducing the backlight flicker frequency to 60Hz. Unfortunately, this TV has no motion interpolation feature, and it's limited to a 60Hz refresh rate, which might disappoint some people.

8.9 Response Time
80% Response Time
:
4.9 ms
100% Response Time
:
11.4 ms

This TV has an excellent response time. There is some slight overshoot in most transitions, but this isn't very noticeable. There are duplications in motion, as seen in the above photo, due to the flicker of the backlight.

7.9 Flicker-Free
Flicker-Free
:
No
PWM Dimming Frequency
:
480 Hz

The M Series Quantum 2019 uses PWM to dim its backlight, and there is flicker at all backlight levels below 100. The 480Hz flicker is identical to last year's M Series 2018, but behaves very differently from the 120Hz flicker on the Vizio P Series Quantum X 2019. This high flicker frequency does cause noticeable duplications in motion, which can be seen in our response time photo.

10 Black Frame Insertion (BFI)
Optional BFI
:
Yes
Min Flicker for 60 fps
:
60 Hz
60 Hz for 60 fps
:
Yes
120 Hz for 120 fps
:
N/A
Min Flicker for 60 fps in Game Mode
:
60 Hz

This TV has an optional black frame insertion feature which can improve the appearance of motion. When enabled, this feature reduces the backlight flicker frequency to 60Hz, which helps reduce the amount of persistence blur. This results in more noticeable duplications in motion.

0 Motion Interpolation
Motion Interpolation (30 fps)
:
No
Motion Interpolation (60 fps)
:
No

Unfortunately, this TV does not have a motion interpolation feature.

7.0 Stutter
Frame Hold Time @ 24 fps
:
30.3 ms
Frame Hold Time @ 60 fps
:
5.3 ms

Due to the TV's fast response time, there is some noticeable stutter when watching 24p content, like movies. This is especially noticeable with slow-panning shots.

7.8 24p Judder
Judder-Free 24p
:
Yes
Judder-Free 24p via 60p
:
No
Judder-Free 24p via 60i
:
No
Judder-Free 24p via Native Apps
:
Yes

The M Series Quantum 2019 can remove judder from 24p sources and from the native apps, as long as Film Mode is enabled. Unfortunately, it can't remove judder from 24p content sent through a 60p/i source, like a cable box.

0 Variable Refresh Rate
Native Refresh Rate
:
60 Hz
Variable Refresh Rate
:
No
4k VRR Maximum
:
N/A
4k VRR Minimum
:
N/A
1080p VRR Maximum
:
N/A
1080p VRR Minimum
:
N/A
1440p VRR Maximum
:
N/A
1440p VRR Minimum
:
N/A
VRR Supported Connectors
:
N/A

This TV has a 60Hz panel, but doesn't support any advanced variable refresh rate features, like FreeSync or HDMI Forum's VRR feature.

8.9

Inputs

The Vizio M Series Quantum 2019 has outstanding low input lag, which is important for a responsive gaming experience, or for use as a PC monitor. This TV has limited support for different resolutions, and it only accepts 4k or 1080p signals at 60Hz; it does not support 1440p, or 120Hz inputs. The M Series supports Dolby Vision, but doesn't support HDR10+.

9.2 Input Lag
1080p @ 60 Hz
:
20.6 ms
1080p @ 60 Hz Outside Game Mode
:
64.4 ms
1440p @ 60 Hz
:
N/A
4k @ 60 Hz
:
20.7 ms
4k @ 60 Hz + 10 bit HDR
:
20.5 ms
4k @ 60 Hz @ 4:4:4
:
20.5 ms
4k @ 60 Hz Outside Game Mode
:
64.5 ms
4k @ 60 Hz With Interpolation
:
N/A
8k @ 60 Hz
:
N/A
1080p @ 120 Hz
:
N/A
1440p @ 120 Hz
:
N/A
4k @ 120 Hz
:
N/A
1080p with Variable Refresh Rate
:
N/A
1440p with VRR
:
N/A
4k with VRR
:
N/A
8k with VRR
:
N/A
Auto Low Latency Mode (ALLM)
:
No

The M Series Quantum 2019 has excellent low input lag, as long as Game Low Latency is enabled. Unlike many top Vizio TVs, including the Vizio P Series Quantum X 2019, there is no dedicated low latency port. Instead, all four HDMI ports have the same low latency.

See our recommended settings for gaming here.

7.5 Supported Resolutions
1080p @ 60 Hz @ 4:4:4
:
Yes
1080p @ 120 Hz
:
No
1440p @ 60 Hz
:
No
1440p @ 120 Hz
:
No
4k @ 60 Hz
:
Yes
4k @ 60 Hz @ 4:4:4
:
Yes
4k @ 120 Hz
:
No
8k @ 30 Hz or 24 Hz
:
No
8k @ 60 Hz
:
No

This TV supports 1080p and 4k inputs, but only at 60Hz. It doesn't support a 120Hz input or 1440p. Chroma 4:4:4 is displayed properly, as long as the Picture Mode is set to 'Computer'. Higher bandwidth formats, like 4k @ 60Hz 4:4;4 requires that the Full UHD Color setting be enabled for the port in use.

See our recommended settings for PC gaming here.

Input Photos
Total Inputs
HDMI : 4
USB : 1
Digital Optical Audio Out : 1
Analog Audio Out 3.5mm : 0
Analog Audio Out RCA : 1
Component In : 0
Composite In : 1
Tuner (Cable/Ant) : 1
Ethernet : 1
DisplayPort : 0
IR In : 0
SD/SDHC : 0
Inputs Specifications
HDR10
:
Yes
HDR10+
:
No
Dolby Vision
:
Yes
HLG
:
Yes
3D
:
No
HDMI 2.0 Full Bandwidth
:
Yes (HDMI 1,2,3,4)
HDMI 2.1
:
No
CEC : Yes
HDCP 2.2 : Yes (HDMI 1,2,3,4)
USB 3.0
:
No
Variable Analog Audio Out : Yes
Wi-Fi Support : Yes (2.4 GHz, 5 GHz)

This TV supports Dolby Vision from all sources, but doesn't support HDR10+.

Audio Passthrough
ARC
:
Yes (HDMI 1)
eARC support
:
No
Dolby Atmos via TrueHD via eARC
:
No
DTS:X via DTS-HD MA via eARC
:
No
5.1 Dolby Digital via ARC
:
Yes
5.1 DTS via ARC
:
Yes
5.1 Dolby Digital via Optical
:
Yes
5.1 DTS via Optical
:
Yes

The M Series Quantum 2019 supports ARC over HDMI port 1, but it doesn't support eARC. It can pass DTS and Dolby Digital over ARC, but for DTS to work over optical, the Digital Audio Out setting must be set to 'Bitstream'.

6.9

Sound Quality

The Vizio M Series Quantum delivers decent overall sound quality. The low-frequency extension (LFE) is high, resulting in bass with no thump or rumble and very little punch. Dialog is clear, though, and this TV gets loud enough for most environments. For a better sound, a soundbar or dedicated speaker system is recommended.

6.7 Frequency Response
Low-Frequency Extension
:
119.87 Hz
Std. Dev. @ 70
:
2.84 dB
Std. Dev. @ 80
:
2.92 dB
Std. Dev. @ Max
:
4.97 dB
Max
:
89.1 dB SPL
Dynamic Range Compression
:
4.44 dB

Decent frequency response. The low-frequency extension (LFE) is bad, resulting in very limited bass, with no thump or rumble and very little punch. The response above the LFE is good, and dialog is clear, but it lacks airiness a bit. It can get quite loud, but unfortunately, there is significant pumping and compression at louder volumes.

7.4 Distortion
Weighted THD @ 80
:
0.084
Weighted THD @ Max
:
0.404
IMD @ 80
:
1.98 %
IMD @ Max
:
4.46 %

Decent distortion performance. The total amount of harmonic distortion (THD) produced is good below 80db SPL, but it increases noticeably at max volume.

6.8

Smart Features

Smart OS : SmartCast
Version : 1.27

Like most Vizio TVs, the M Series Quantum has decent smart features. The interface is well-organized and polished, but isn't very smooth, and it's a bit slow. It has a decent selection of apps, but unfortunately, it isn't possible to add new apps.

7.0 Interface
Ease of Use
:
Easy
Smoothness
:
Not Smooth
Time Taken to Select YouTube
:
16 s
Time Taken to Change Backlight
:
3 s
Advanced Options
:
Many

The interface is visually appealing and easy to use, but unfortunately, it's not very smooth. Some basic tasks can take a long time to do, including just navigating and launching an app.

10 Ad-Free
Ads
:
No
Opt-out
:
N/A
Suggested Content in Home
:
Yes
Opt-out of Suggested Content
:
No

Like other Vizio TVs we've tested, there are no ads. There is a row of suggested content, though, on the main page, and this can't be disabled.

6.5 Apps and Features
App Selection
:
Many
App Smoothness
:
Average
Cast Capable
:
Yes
USB Drive Playback
:
Yes
USB Drive HDR Playback
:
Yes
HDR in Netflix
:
Yes
HDR in YouTube
:
Yes

There are a few apps pre-loaded on the M Series Quantum 2019, but like other Vizio TVs, there's no way to add additional apps.

6.0 Remote
Size
:
Medium
Voice Control
:
No
CEC Menu Control
:
Yes
Other Smart Features
:
No

The remote is very basic, and is identical to the remote included with other Vizio TVs. There are a few dedicated buttons for the most popular streaming features, but the remote has no other advanced features, like voice control.

8.0 Remote App
Acts as the Remote
:
Yes
Directly Launches Apps and Inputs
:
Inputs Only
Inputs Text in YouTube
:
Yes
Inputs Text in Netflix
:
Yes
Streams Device Files
:
No
Controls TV Settings
:
All
Voice Control
:
No

The remote app is great, and replaces all functions of the remote. It can also be used to enter text into some apps, and can be used to adjust the TV's settings.

TV Controls

The physical controls offer basic control of the TV, including power, volume control, and inputs.

In The Box

  • Remote
  • Batteries
  • User Manual
  • Power Cable (not shown)

Misc
Power Consumption : 78 W
Power Consumption (Max) : 194 W
Firmware : 2.1.6.3

Differences between Sizes and Variants

We tested the 65" M Series Quantum 2019, version M658-G1, and we expect our results to be valid for the 55" (M558-G1) model as well. The 43" (M437-G1), 50" (M507-G1), 55" (M557-G0), and 65" (M657-G0) are a bit different, as they aren't as bright, and have a more limited local dimming feature. They may perform differently in other ways, but we don't know.

If someone comes across a different type of panel or if their M Series Quantum 2019 doesn't correspond to our review, let us know and we will update the review. Note that some tests, such as the gray uniformity, may vary between individual units.

Size Model Peak Brightness Dimming Zones
43" M437-G1 400 12
50" M507-G1 400 16
55" M557-G0 400 16
55" M558-G1 600 90
65" M657-G0 400 20
65" M658-G1 600 90

We don't know the manufacturing date of our M658-G1, but the label is available here.

Compared to other TVs

Top left: Vizio P-Series Quantum 2018 (PQ65-F1). Bottom left: Samsung Q70R (QN55Q70R). Middle: Vizio M-Series Quantum 2019 (M658-G1). Top right: Samsung Q60R (QN55Q60R). Bottom right: Sony X800G (XBR-55X800G). Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The M Series Quantum 2019 is a great TV, and outperforms many similarly-priced models. See our recommendations for the best TVs, the best 4k TVs, the best 4k gaming TVs.

TCL 6 Series/R617 2018
55" 65" 75"

The Vizio M Series Quantum 2019 and the TCL R617 are very similar overall. The M Series has a better local dimming feature and much better black uniformity, so it's a better choice for a dark room. The R617 is a lot brighter, and has an optional motion interpolation feature.

Samsung RU8000
49" 55" 65" 75" 82"

The Vizio M Series Quantum 2019 is very similar to the Samsung RU8000. Each has their own strengths and weaknesses. The M Series Quantum has better contrast, a full array local dimming feature, and a much better color gamut, making the Vizio a better choice for HDR. The RU8000, on the other hand, has a motion interpolation feature, and some better gaming features, including support for AMD FreeSync variable refresh rate technology.

Vizio P Series Quantum 2019
65" 75"

The Vizio P Series Quantum 2019 is a bit better than the Vizio M Series Quantum 2019. The P Series has a better response time, and it can interpolate lower frame rate content as high as 120 fps. The M Series has no motion interpolation feature but has better black uniformity.

Vizio P Series Quantum 2018
65"

The Vizio P Series Quantum 2018 is much better than the Vizio M Series Quantum. The P Series is significantly brighter, has better reflection handling, a faster response time, and it has an optional motion interpolation feature.

Hisense H9F
55" 65"

The Hisense H9F is a bit better than the M**8 variants of the Vizio M Series Quantum 2019 for most uses, and is likely a lot better than the M**7 variants, although we haven't tested them. The H9F is a lot brighter and it has a faster response time, which is great for gaming. The H9F can also interpolate motion up to 120Hz, whereas the M Series Quantum 2019 has no motion interpolation feature. The M Series Quantum 2019, on the other hand, has much better black uniformity, and a more versatile black frame insertion feature, making it a slightly better choice for a completely dark room.

Vizio M Series 2018
55" 65" 70"

The Vizio M Series Quantum 2019 is better than the Vizio M Series 2018. The M Series Quantum 2019 has better contrast, a better local dimming system, and a much better color gamut.

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Conclusion
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8.1 Mixed Usage
Overall, the Vizio M Series Quantum 2019 is a great TV for most uses. It's a great choice for watching movies or playing games, even in a dark room. It has great reflection handling and great SDR peak brightness, good for watching TV shows or sports in a bright room, but the image degrades at an angle, so it isn't as well-suited for watching at an angle or with a group of friends.
8.2 Movies
This is a great TV for watching movies in a dark room. It has an impressive native contrast ratio, good local dimming feature, and outstanding black uniformity. 1080p content is upscaled well, and looks almost as good as native 4k content. It can remove 24p judder from native 24p sources and the internal apps, but not from a cable box or other 60p/i source.
7.6 TV Shows
This TV is good for watching TV shows in a bright living room. It has great reflection handling, and great peak brightness with SDR content, so glare shouldn't be an issue. Unfortunately, the image degrades at an angle, and older, lower resolution shows aren't upscaled as well as on other TVs.
7.8 Sports
This is a good TV for watching sports in a bright room. It has great reflection handling and great peak brightness, so glare shouldn't be an issue, and it has an excellent response time. Unfortunately, the image degrades when viewed at an angle, so it isn't a great choice for watching the big game with a group of friends, and there is noticeable dirty screen effect (DSE).
8.8 Video Games