should i buy a vita or a 3ds?

[eFKac]

You should tell us what kind of games do you like, 3DS has probably a bit more exclusives but they may not cater to your taste. As for indies Vita hands down. Overall Vita is the better deal in my opinion because of the price finally, hardware, remote play with PS4 and games which I already own and these from PS+, I'm personally never even considering 3DS but you should browse the libraries to see which would fit you best.