With a PC you will get all the benefits of PC plus xbox titles. If you don't have/want a PC, xbox is a great console.

With a PS5 you will get all the sony exclusives, some of which are really really good and don't come to PC until later.

Switch should be looked at as exclusively hand-held for nintendo titles. If you're not a nintendo junkie and don't travel frequently I wouldn't get it, especially with the steam deck out now. The system is horribly underpowered and runs everything worse than all other systems. On a full-size screen it looks bad because of its 720/1080p max res. The app-store sales are terrible, better prices everywhere else.

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So in short I'd choose PS5 or xbox (leaning towards PS5) and then the steam deck if you need portability. Switch for nintendo games.

I use my DT 1990s for gaming all the time (it's actually their primary use) and absolutely love them. I haven't heard the others either.