Sony wont be releasing their next gen console for another 2-3 years at least.
I think I might get a Vita, FIFA Football is definitely on the list of games I'd like, but at the moment the choice is somewhat limited, I'd like a good racing game (most of what are offered at the moment are poor) and also a PS Vita Edition of Grand Theft Auto (Which is rumoured to be in development).
Amazon are doing it for £232 with an 8Gb memory card and FIFA which isn't bad, I don't need the 3G version, I think it's a rip off personally.