My 65" B6V arrived today and I am utterly blown away by how good it looks.
Had been reading threads with issues about vignetting etc but this looks incredible.
At first I was panicking as there seemed to be two areas on the screen (before even turning it on) that had blemishes, but I think it was where it had been in a cold warehouse/van as they disappeared soon after I turned the TV on and haven't reappeared.
Input lag on standard 1080p and 4k games was unnoticeable, it was only when I played Forza Horizon 3 in HDR that I noticed it, and even then it wasn't exactly game breaking.
Previously had a Panasonic 55VT50 plasma and then a Panasonic 58AX802b LED but this has the best image quality I've ever seen. The grand tour looked superb and that was just streamed. Can't wait to try a decent UHD Blu-ray.