considering how many new IPs there are for launch for psv I doubt you know whether you will like them or not either :P I think you will be able to play a much bigger variety of games on the psv..but that's just my opinion
I would say just take a look at all upcoming games for PSV and also current and upcoming games for 3ds and see what you like and go for it. If you have something like a gamestop near you chances are they have a kiosk with a 3ds so you can give a game or two a go on it..w/e you get you can't go wrong :) have fun
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