If none of the launch titles look appealing to you, there is something wrong with you.
Assuming you can't fix this problem you have, get a 3DS. If you haven't played many nintendo games then I'm sure you'll have a lot of fun with all the remakes of the classics.
I still voted PSV though, because I think it will be the better handheld is just about everyway possible. But you still can't go wrong with the 3DS, and it is a lot cheaper considering you also have to pay for the stupidly priced vita cards.