If one had to choose only one console with all compatible games I think the objectively best move would be the Wii. The Wii catalog is great in itself but you also get all GC classics, some N64 ports. The 360 era had some great games but it's mostly grim and violent shit, I think I'd end up depressed af playing just the xBox catalog. But most importantly, you can play the Wii with non-gamers, an argument which singlehandedly wins the race