Depends on your budget My personal preference is S
Post# of 96879
Last year I bought a Samsung 8000 series, 65" HDR. I have it hooked up to a Roku box that will process the 4K HDR signal.
On the lower end, I was thinking of the TCL 4K with HDR with a Roku built in to replace my old 4K Samsung that doesn't have HDR in my bedroom.
The price of QLED 4K tv's are coming down in price too, making them a more viable option the a couple of years ago price wise.
HDR is a must I think and I like Roku because of the large viewing options they offer.
Roku has no problems with Ultraflix if you get the proper Roku box and HDMI cable and eliminates the guesswork finding a TV compatible with Ultraflix.
GL on your choice