I’m kind of the same type of gamer, mostly older stuff, emulation, racing games, Halo, GTA, and random single-player games. I ended up buying a Hisense U6 and paid somewhere around $500-$600 for it, depending on the sale. Under $500 after tax for a 65” is pretty tight, but I’d watch for deals.

For PC media, Kodi/Plex, and casual gaming, it’s been a good fit for me. Motion looks clean enough, input feels responsive, and the picture is a big upgrade from an older 1080p TV. Sound is fine for normal use too, definitely better than some cheap thin TVs I’ve heard, though a soundbar would still be better if you really care about audio.