Well, I'd like to give my two cents on some games I think would be incredibly awesome for RPG fans, such as myself.
Kingdom Hearts: Dream Drop Distance - Incredibly fun action RPG for the 3DS. Also kinda good if you want to get into the series, since it does give you a summary of all other games. Still, I'd recommend playing at least KH I and II first.
Shin Megami Tensei IV - Brilliant RPG, but a hard one. If you get frustrated easily, this may not be for you. But if you enjoy a little challenge, then play this awesome game!
Devil Summoner: Soul Hackers - A great game. Not quite up there with SMT IV, but is still a great amount of fun!
Those are about the great RPGs I have on 3DS. If you're on doubt, I'd greatly recommend buying them.
Also, as you all may clearly see, I'm a huge fan of Rune Factory, but I'm in a bit of a difficult financial situation now, so I wonder...
Should I buy Rune Factory 4 now with the limited amount of money I have and wait on getting the other game I really want, Phoenix Wright: Dual Destinies, or should I do the opposite? I really want both, but my wallet begs to differ on that!