PS5 = Demon Souls (especially if you haven't played it) and Miles Morales are pretty solid. Everyone raves about Sackboy. My wife plays the 5 more than I do right now.
Series X = no exclusives I want. Just playing AC Valhalla now, early in the game, but enjoy it. The dark ages shyt appeals to me. GamePass is great. Haven't had an Xbox since the OG so there's a lot to catch up on. Good place to play the small 10-15 hr indie titles you'd never actually buy.
Series S = just have that in the bedroom for random GamePass gaming. Not a bad little console for what it does.