Both of the handhelds are getting plenty of quality rpgs. On Vita you have Persona 4: Golden, Ragnarok Odyssey, Soul Sacrifice, Ys: Memories of Celceta, Final Fantasy X and X-2 HD remakes, Mind=0, Toukiden, Demon Gaze, Valhalla Knights 3, Tales of Hearts R, Atelier Totori Plus, Phantasy Star Online 2, Murmamasa Rebirth, and God Eater 2 just to name some off the top of my head.
On the 3ds side you got SMT Soul Hackers, SMT4, Pokemon X/Y, Project X Zone, Fire Emblem, Bravely Default, Tales of the Abyss, Devil Survivor, and Etrian Odyssey 4.