Samsung KS8000. It is by far the best (affordable) HDR LED TV out right now. In fact, it is probably the only choice right now. Input lag with HDR @ 4K is only 22ms. The Sony 850D (and X850C and X900C and X930D) with HDR is 90+!!!! That is terrible! The 800D is much better for a smaller, more affordable HDR TV (33ms).
I really wanted to like the Sony TV's as I am in the market looking and researching, but that HDR input lag kills them. Sony pushing HDR with the PS4 Pro better put out a firmware update to allow Game mode while doing HDR like the Samsung does. The X800D allows the same input lag with HDR, which makes me believe Sony can provide a fix for the other models.
Vizio P series and LG 8500 series both are in the 60s range with HDR which again is horrible for gaming.
Note: The models I am listing are ones that are actually worth getting with somewhat decent HDR. Lower models color gamut and contrast and brightness are basically terrible to really enjoy HDR, so don't waste your time.
