Persona 4, then Final Fantasy 10-2. Most people don't like the Atelier games, but if you like the time management gameplay of the series, you'd like those as well. Problem is, you can get all these games on the PS2 or PS3, so the purchase wasn't worth it honestly.
If you haven't played PSX or PSP games, there are a lot of good RPGs on PSN for both and the Vita will play almost all of them. Arc the Lad 2 is my favorite PSX RPG available on PSN. Brigandine isn't on PSN, neither is the PSX version of Tactics Ogre. Other great RPGs though are the Squaresoft games, Grandia, Breath of Fire 4, Vanguard Bandits, etc.







