Do you really need to make a shitstorm inducing thread to find out which console you would prefer?
Anyway, I picked Vita. The OS, UI, apps, features, hardware and controls are almost perfect in my opinion. It's main issues are pricing (specifically memory cards) and the back touchpad, which I think is a pretty useless gimmick that is just driving up production costs. As for games library, neither console is that great in my opinion, but I do prefer the Vita's library as I'm not that much of a hardcore Nintendo fan, even if a lot of the games I want on the system are either multiplatform, ports or remasters.