When comparing LG UJ6300 55" (55UJ6300) vs Samsung MU7000 65" (UN65MU7000), the Slant community recommends Samsung MU7000 65" (UN65MU7000) for most people. In the question“What are the best TVs?” Samsung MU7000 65" (UN65MU7000) is ranked 66th while LG UJ6300 55" (55UJ6300) is ranked 174th. The most important reason people chose Samsung MU7000 65" (UN65MU7000) is:
The MU7000 is suitable as a PC monitor because of its relatively small screen size of 40". It can be used up front thanks to the small minimal viewing distance, and it has full 4:4:4 color support that ensures text or shapes with clear, hard edges are not blurry.
Specs
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Pros
Pro Good for gaming
The UJ6300 is a decent choice for gaming thanks to its extremely low input lag, excellent response time, and full 4K 60 FPS support.
In terms of input lag, this TV outperforms almost every currently available high-end TV. The low input lag makes the TV great for fast games. The motion blur is really low at ~17ms, so fast-moving objects won't leave any trails at all.
It’s also compatible with 60 Hz 4K input which makes it suitable for high-end console gaming.
Pro Has an excellent smart TV platform
The UJ6300 runs on the webOS smart platform. It has a great ecosystem of apps, ranging from media streaming services (Netflix, Amazon, YouTube, etc.) to third-party apps. Support for these apps are also first-class with up-to-date features and good performance; for instance, the YouTube app supports 360-degree video playback.
Pro Handles reflections well
The UJ6300 does a decent job at lowering the intensity of glare. Reflections are kept to a minimum thanks to the panel's semi-gloss finish. In fact, only around 1.9% of total light is reflected - a feat surpassed only by a handful of higher-end TVs.
Pro Fairly good upscaling capabilities
The UJ6300 can upscale 480p, 720p, and 1080p content quite well. The majority of details will be preserved, although there might be some artifacts on the sides of an image.
Pro Compatible with current-gen consoles
The UJ6300 will run content from the PS4 Pro and Xbox One X smoothly, and its input lag stays low at ~13ms even with HDR-enhanced 4K content. You will not notice any increased delay when switching from SDR gaming mode to HDR.
Pro Good at handling dynamic content
The UJ6300 is great at handling motion, making it a good choice for displaying fast and dynamic content. Fast-moving objects don't leave any discernible trails behind them, thanks to its low motion blur of only ~17ms.
Pro Can be used as a PC monitor
The MU7000 is suitable as a PC monitor because of its relatively small screen size of 40". It can be used up front thanks to the small minimal viewing distance, and it has full 4:4:4 color support that ensures text or shapes with clear, hard edges are not blurry.
Pro Decent picture quality
The MU7000 looks good with really deep black levels and sufficient peak brightness levels for most content.
Dark scenes look amazing thanks to the panel’s contrast ratio of roughly 6300:1, which means it’s capable of producing blacks that are 6300 times darker than the brightest white pixel the screen can produce.
It gets bright enough for SDR content with a peak brightness level of ~350 nits, which is sufficient for making colors pop.
The best viewing experience will be in a dark environment where the panel won’t have to compete with light as the MU7000’s screen can’t get bright enough to perform as well in bright environments.
Pro Great well-rounded option
The MU7000 is a great well-rounded option for watching movies, gaming, and sports. Its picture quality is decent, it has low input lag and low motion blur, and the screen uniformity is great. It can also be used as a PC monitor.
Cons
Con The remote looks outdated
Apart from some tiny details, it seems like LG adapted their old remote from 2016 to the UJ6300. The remote is as basic as it can get. It does not have any smart functions that can be found on higher-tier LG TVs. In fact, it is very disappointing that this TV does not have LG’s new Magic Remote.
Con Suffers from minor image retention
The UJ6300 suffers from minor image retention issues. If a static image is on the screen for more than 10 minutes, it gets burned in and you'll be able to see it retained on the screen faintly, which is really unpleasant. Fortunately, this does not cause permanent pixel damage and disappears in around 5 minutes.
Con Can't handle intense glare
The UJ6300 can’t fight glare well in really bright environments because of the panel’s low peak brightness level. The brightness peaks at only ~170 nits for SDR, which is really low. Even cheaper and lower-tier TVs are usually brighter.
Con Dark scenes look bad
The UJ6300 fails to reproduce deep and uniform blacks. Its dark images look smoky and grey-ish, which makes many dark scenes look awful. Furthermore, the panel’s low contrast ratio of only 1314:1 makes the blacks look distorted and flat.
Con Some artifacts might occur
Because of the TV’s specific RGBW pixel structure, some unwanted artifacts might occur while the TV is displaying 4K content. The problem with the RGBW pixel structure is that only 75% of the total panel's pixels can produce colors, which results in lower quality and less detailed picture.
Con Not suitable for group watching
The MU7000 has a narrow viewing angle that makes it unsuitable for group watching.
Audience sitting away from the center of the screen will not experience the same picture as those sitting in the center, because the picture quality starts to deteriorate significantly when viewing from just ≥20° away from the screen's center.
Con Might require some color calibration out of the box
The MU7000's colors might look off to some viewers out of the box due to its high white balance. Switching to the "Movie" option in "Picture Mode" should be enough to remedy this for most, but only calibration can fix this for some viewers.
Con HDR performance is lacking
The main drawback of the MU7000 is its HDR performance.
While it has a wide color gamut that allows it to reproduce the wide range of colors necessary for true HDR playback, it can’t get bright enough to take advantage of it. At only ~300 nits of brightness, it's pretty hard for HDR pictures to pop.
It also doesn’t have local dimming, so its black levels can’t be improved further for better HDR performance.