I have a DS lying around that i dont even use. I've decided I'll stick with my Vita...invest those $200 dollars in a PS4. Right now, there are more games coming out on the Vita then on 3DS...two games (Fire Emblem, Bravely) dont warrant a purchase.
I see PS Vita beginning to emerge with the slew of games that are about to come out... Borderlands 2 , FFX/FFX-2 , Freedom Wars, Demon Gaze , Soul Sacrifice Delta and Regnarok Oddessy Ace to name a few...
I do miss turn based RPGs on the vita though....Havent seen much of them since Persona 4 Golden.
I dont mind the ported games on the Vita, Vita sells the concept of console quality games on the go.... so in a way they havent gone astray from the original formula..
Update: but that 3d Effect though :$...