Almost every new TV that has been released this year has a 4k resolution. Unless there is a specific reason that you are looking for a 1080p TV, you should be able to cover your needs with one of the 4k models that are available on the market.
Note: Since new TVs tend to launch at very high prices, it's unlikely that these newer models will become reasonable choices until the latter half of the year. Because of this, many of the 2018 models remain as picks in our recommendations.
The best 4k smart TV we've tested so far is the LG B8. It has an excellent picture quality with perfect blacks that deliver an outstanding dark room performance just like the more expensive models, the LG C8 and the LG E8. It's a great choice if you have a large room with a wide seating arrangement, as the image remains accurate when viewed from the side. This TV has a wide color gamut and can get decently bright in HDR displaying vivid colors and bright highlights. It has an almost instantaneous response time, so the image is crisp and fast-moving content has minimal blur. This can create some stutter in older content, which, however, you can remove using motion interpolation. This TV is also very responsive thanks to the very low input lag, which is great for gaming or for those times when you'll use the TV as a PC monitor.
Unfortunately, OLED TVs run the risk of temporary image retention and the risk of permanent burn-in, and so does the LG B8. This is more likely to occur if you display static images over a prolonged period. We do not expect most people to experience this with normal varied use.
Overall, the LG B8 is an excellent TV with an excellent performance in most uses.
If you're concerned about the burn-in risk of the LG B8 or the other OLEDs and also want something cheaper, then check out the Vizio P Series Quantum. This TV doesn't have the perfect blacks or the wide viewing angles of the OLEDs. It is, however, an excellent TV with impressive picture quality. It performs very well both in a dark room, thanks to the high contrast ratio and very good local dimming support, and in a bright room, as it can get very bright. HDR content is full of saturated colors and highlights that pop, and motion handling is excellent. Overall, this TV has excellent performance in most uses.
If you want the best mid-range 4k TV, then get the Sony X900F. It doesn't have the perfect blacks of the LG B8 nor does it have the wide viewing angles of the OLEDs. However, this is an impressive TV with great picture quality and deep blacks in a dark room thanks to the high native contrast ratio and the local dimming support. It's a TV that you can place in any room as it can easily fight glare and handles reflections well. This TV has a wide color gamut and HDR content looks very good, full of saturated colors and bright highlights. The TV has a very fast response time and fast motion looks crisp with minimal blur. If you're a casual gamer you will enjoy the low input lag, but more competitive gamers, might not find it satisfactory.
The viewing angles of this TV are poor and it's not a great choice if you often watch TV from the side.
Overall, however, this is a great TV and will keep most those who choose it happy.
If the Sony X900F costs more than you're willing to spend, but you still want a great mid-range 4k TV, then check out the Vizio P Series 2018. You might find that reflections on this TV are a little more distracting, as the brightness levels cannot reach those of the Sony. On the upside, the Vizio has a great picture quality and a high native contrast ratio with local dimming support that allows it to deliver deep blacks in a dark room, greatly enhancing your movie watching experience. This TV will do well in almost any use, and it is very responsive due to its low input lag. Gamers will also find the effective BFI feature that can make the image look crisper.
If you want a mid-range TV with lower input lag the one found on the Sony X900F, then get the Samsung RU8000. You won't get a local dimming feature like the one found on the Sony, and the overall performance isn't as good.
On the upside, this TV is loaded with gaming goodies like FreeSync Variable Refresh Rate support for nearly tear-free gaming. It has a very low input lag, even with motion interpolation, and an auto low latency mode that switches to Game mode when it detects a game being played on a compatible device like Xbox One or PS4. This way, you should always have the lowest input lag.
If the Sony X900F is outside of your budget, the best budget 4k TV we've tested is the TCL R617. This TV is the successor to the extremely popular TCL P607 and is also known as the R613 or R615, depending on where you buy it. It has mediocre gray uniformity that could be disappointing to sports fans.
On the upside, this TV delivers very good picture quality and is just as bright as the Sony. The smart features aren't as advanced as those found on the more expensive TVs, but they are good enough for most people. Overall, it's the best 4k TV for the money.
If you want a cheaper TV than the TCL 6 Series R617 in the budget category, then get the Vizio E Series 2018. This TV can't get as bright as and can't display HDR as vivid as the TCL, nor does it have a motion interpolation feature. On the upside, this is a good 4k UHD TV with a good picture quality with deep blacks and decent motion handling. It's an excellent TV for playing video games with a low input lag across all supported resolutions and modes. Overall, most people looking for a budget TV will be happy with the Vizio E Series 2018.
Our recommendations above are what we think are currently the best 4k TVs to buy for most people in each price range. We factor in the price (a cheaper TV wins over a pricier one if the difference isn't worth it), feedback from our visitors, and availability (no TVs that are difficult to find or almost out of stock everywhere).
If you would like to do the work of choosing yourself, here is the list of all our reviews of TVs that have a UHD screen. Be careful not to get too caught up in the details. While no TV is perfect, most TVs are great enough to please almost everyone, and the differences are often not noticeable unless you really look for them.