Let's say the PC doesn't count and you aren't taking into account backwards compatibility, emulation, online play, homebrew games, and the cost/availability of games.
I feel like I'd want to choose the PS3. Like the Xbox 360 it had a decent lifespan and a lot of games were produced for it. A lot of which are already some of my favorites.
The only things that would make hesitant are I feel like a lot of modern games are larger and have open worlds which I feel like that could be nice in the long run and many of my favorite games for the PS3 have been re-released.
Steam Deck if it counts as a game console here
I would say it doesn't because you are still running PC games. The reason I specified consoles specifically without homebrew and backwards compatibility is it kind of leaves you stuck in a certain generation that typically has a finite lifespan.
You could install Linux on a console and use it forever or rely on homebrew for extended life like the PS Vita otherwise.
Then Xbox Series X as I said in the first version of the comment