On another note, Joe Kane in the latest Widescreen Review:
"If you want to be an early adopter of HDR, a good starting point would be a set that can do HDR-10, including P3 color on a 10 bit panel with a light output of at least 750 nits".
I think only the FALD Samsungs and Sony's hit that right now, but my 930C can get pretty bright in the 400-500 nit range. Im more concerned with 10bit, P3 and HDR10, which it will do.
He also alludes that currently the OLED's are doing things to hurt real PQ trying to hit the higher light output.