I was born in '77...never forget the feeling of walking into Zayers in 1981-1982ish and seeing Atari 2600 display showcasing pacman...blew our fucking minds!
Second time gaming blew my mind was playing super mario brothers on the NES on my parents living room tv.
Third time gaming blew my mind...
I threw the Nitro 7900xtx in the 7950x3D rig and am getting 200-240 fps in BF1 (with all settings @ medium) and OMG so much fun and smooooooooooooth! I could probably poke and prod a couple settings up to high and ultra with minimal fps loss, but am having way to much fun with it to bother...
Buy what makes you happy. Everybody's use case is different.
OLEDs slightly to dim for me to be my everyday driver, and 1440p is too soft for my tastes.
If 50% of your use case is work productivity or web surfing then 57"
If you don't mind 1440p and dimmer oled then the 39"
I think the 21:9...