Sonos Arc Ultra sound bar

I would avoid Samsung TVs and stick with LG or Sony. There are too many Samsung TV owners who have reported audio cutting out with the Arc Ultra.

I use a 77” LG C3 OLED with my Arc Ultra setup. It’s a beautiful TV that has been working flawlessly with the Arc Ultra. I use a Panasonic UB820 Blu-ray player, an Apple TV 4K, and a Roku Ultra with the TV with no issues. The C3 can pass through all the audio formats the Arc Ultra supports.

TV size depends on the room size / viewing distance and the TV’s resolution.

https://www.crutchfield.com/learn/learningcenter/home/TV_placement.html

I’m a Sony fan myself, have several here working with Beams, Arc and Arc Ultra bars. No surprises and very little fiddling to set up.

If I was buying to day this with an 85” screen is tempting:

https://www.crutchfield.com/learn/best-tvs.html#movie

https://www.crutchfield.com/cpg/Sony-BRAVIA-9-Series-TVs.html