The World Ends With You. I would totally replay it again from the start, if I hadn't already collected about 97% of the pins. Love everything about the game.
2nd best would probably be the Kingdom Hearts series, but I just don't know which one. I want to say Birth By Sleep, but I like the other games a lot too...
3rd I guess would be probably be Valkyria Chronicles(would that count as a JRPG?), but I'm not done with the game yet, so I'll probably say Nier. Such a depressing game, I love it. Now if it was only refined in a lot of other places, I would love it even more. Love the music here too.
4th might as well be one of the Persona games, probably 4. Persona 3 FES was my first game in the Persona/SMT franchise. And yes, it was good, but 4 was just so much better.
5th and final place is FFXIII I guess. Liked everything except for the side characters and the plot feeling a bit wierd near the end. Though I felt like it was missing some UMPH to make it really special.