I have a 3DS and will stick to it for now. I prefer Zelda, Mario, Layton etc. to anything Ive seen on Vita, and the 3D 'gimmick' as well as the other SW has it for me...
When PSV drops to £100 from £230 (and the 3DS is already £160 BTW), i'll get one. But I'm happy with what I have currently.