The U8K is a good tv if you watch Netflix, Disney+ or any streaming content at 1080p or 4k, in SDR, HDR10 or Dolby Vision. The HDR10+ in Amazon prime is not as good because the HDR10+ presets on the TV dims a lot the picture quality, doesn't let the highlights stand out, so it won't look as good as other movies in different formats. You can bypass the HDR10+ by installing a steaming adapter and use other formats like regular HDR10 that won't try to force into the TV the HDR10+ adaptive meta data.The biggest issue with the TV is uniformity. My unit came with a lot of spots of light bleed in the panel that affects the image quality when the backlight's local dimming system is trying to dim areas of the movie that were supposed to be black but will show gray instead and where there should be some vibrant color it will show it more pale because of this panel defect.The TV improved a lot from the previous U8H as it does a much better job cleaning streamed content that has grainy or artifacts (noise and gradations settings actually work on the U8K) but it is still not on par with the Samsungs or Sony's that have better smoothing of artifacts and gradations. The gray and black uniformity issue makes it worse as it contributes to a dirty image in some scenes. Also the processor doesn't seem to keep up with the processing of the frames as in some scenes it shows it unprocessed and then the TV doing the smoothing right after so it is a bit distracting seeing some frames without the processing (grain, artifacts, banding). The processor just seems slow with processing the frames in real time.On regular TV channels or YouTube the quality is not as good as in Netflix. There is a lot of color shifting between contents and processing it's not consistent between different contents so you'll find yourself constantly adjusting the picture settings to improve the image between channels.The interface is also slow, sometimes freezing for moments witch gives the feeling of navigating a windows computer plagged with some virus.Another bug is that sometimes you turn off the TV, go to a previous watched content on Netflix and the black levels are completely messed up, very gray, pale and when you go to settings to adjust them it is locked up somehow. You try to adjust any setting and it says the setting is not avaliable for adjusting. You have to turn the the off, leave it off for a while and pray the next time you turn it on the black levels are back to normal or the picture settings on the menu are unlocked and working again so you can re-adjust them.This is definitely a bug that Hisense has to look into and solve it. I suspect it could be a Google TV interface bug as I've seen it before on a TCL R655 I returned before it for the same reason.As for motion it is not perfect. There's jitters and juddering ocasionaly. The smooth setting is the best but still judders. The other settings like standard or film are worse.Colors are vibrant when the local dimming doesn't mess up lighting up the whole screen making the picture colors more bland and washed-out which doesn't happen all the time but when it does it is perceptible. Seems like another issue caused by the slow image processor.In general the TV sometimes looks dimmer than it was supposed to in some scenes and highlights doesn't stand up well when the processor seems to be lost analyzing the frame. A lot of black crushing seems to occur to prevent blooming in dark scenes.In gaming the image seems dimmed down more than normal which also prevents some highlights to stand out. Image is still good just not great, and the color seems darkly oversaturated because of that.To resume, it is a good TV that cannot achieve greatness due the slow processor and lack of refinement in the image processing side where the TV processor sometimes just doesn't keep up analyzing the frame in real time to know what should be lit up or dimmed down and in what amount, where to bright some highlights up and where to dim some shadow or dark areas down.Colors are good and vibrant but visibly inaccurate, needing some calibration and with calibration I think the image will definitely look a lot better.If you don't wanna go through all the hassle of calibrating or being constantly forced to adjust image settings in different contents get a Sony. If you don't have the money, you can get 70% to 80% of a Sony image quality and processing for a lot less with some adjusting here but if you are picky with image quality like me you will have some frustrations sometimes.It's a shame because with a better processor or a little more refinement this TV would reign right up there with the top ones because sometimes it shows its greatness, sometimes it doesn't.PS: Got a replacement unit from Amazon and the uniformity on this unit was a lot better but still not satisfactory. There wereno clouding spots all over the screen, just a few small ones barely noticeable but enough to show in some frames when watching a show. The brightness and contrast on the replacement unit was way better with no issue of pale images or grayish backs BUT... that's how far my luck went. The colors on this unit was all over the place. On the color preset warm1 everything looks too green and on warm2 everything looks too red. On standard everything looks too pale and on cool everything looks too blue and pale. In other words it needs professional calibration. I was able to enjoy the incredible high brightness the TV can achieve (not in HDR10+ tough) and the blacks this time were inky blacks, but was irritated by how bad and off the colors were. Some movies and series on Netflix are graded really good and overlaps the TV settings and in those cases the images look really good but they are a few exceptions. Most other contents you will find yourself back and forth trying to adjust colors with no success and will notice something is not right. I give up on this TV.