I picked up a 55 inch Samsung KU6500 (the curved version of the KU6300) and I'm very impressed with the quality of the display. I tried out HDR with Infamous: First Light and didn't really know what I was looking for in terms of a visual difference. It was very dark, but the game is generally dark. It looked pretty excellent though with that being said. Played some DOOM on this set as well and it's a big improvement over my older 2010 55 inch Samsung LCD set. Maybe my settings were bad on the old set but the dark corridors and rooms are much more clear on this set for this game.
However, I am contemplating returning the KU6500 and getting the KS8000 for completely shallow aesthetic reasons that have nothing to do with the lack of true HDR with the KU6500. The plastic stand and bezel are cheap looking for such a bold curved design and I'd rather go with a flat KS8000 with better materials. I understand it's budget priced but there are worse TVs with better looking materials. I own two other Samsung TVs and they both have nice "glass"-like stands and bezels, and nice metal back panel and this TV looks cheap compared to them. I'll give it a few more days to see if I can live with it.
However, I am contemplating returning the KU6500 and getting the KS8000 for completely shallow aesthetic reasons that have nothing to do with the lack of true HDR with the KU6500. The plastic stand and bezel are cheap looking for such a bold curved design and I'd rather go with a flat KS8000 with better materials. I understand it's budget priced but there are worse TVs with better looking materials. I own two other Samsung TVs and they both have nice "glass"-like stands and bezels, and nice metal back panel and this TV looks cheap compared to them. I'll give it a few more days to see if I can live with it.