No tv in my (main) basement listening room, but I replaced the Plasma’s with a Sony A80j 65" oled in 22 and in the family room in 23 the A85 Sony oled. Both sets are google OS and have been problem free. The family room can’t be difficult for friends or family so I use the Yamaha YSP-5600 with a 15" paradigm sub that doubles as an end table. The living room sports the 65" with a revel ultima 1 center, a pair of VA beethovens being drivin’ by an ancient HK AVR. I’ve found audio requirements are less critical for an immersive experience with video.
While I don’t have the experience to compare Sony oled to other brands like LG (which makes the sony panels) or Samsung I come from using Plasma’s so while the Sony’s are much brighter in comparison to what I was used to I have read reviews that state the ultimate brightness may be lacking for some rooms, idk. Regarding screen size? As big as will fit the room that doesn't give you a headache while watching! always get a 2-4 week return/exchange guarantee.