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.
Most consoles from the sixth generation onward can run Linux. The Wii, Xbox 360, original Xbox, Nintendo DS, and PSP can all run some form of Linux.
I’d still say that’s bypassing the restrictions of the console so it can be something else. It’s like installing DOOM on a smart fridge and calling it a gaming console.