It's really not a JRPG at all. It's more like an action/adventure Pokemon game in a dream-like haunting world.
The basic gameplay is solid with nothing really standing out as truly impressive except perhaps the Sixaxis tilt controls. A lot of people hated them, and a lot loved them. Personally, the Sixaxis controls, the story, and the atmosphere are what made this game an easy buy for me. The presentation is so stylish and well done.
Make sure you DL both demos (if both still exist) because one is more gameplay-driven and the other is way more story-driven. If you play both, you'll definitely know whether or not you want the game.
My Top 5:
Shadow of the Colossus, Metal Gear Solid 3, Shenmue, Skies of Arcadia, Chrono Trigger
My 2 nex-gen systems: PS3 
and Wii 
Prediction Aug '08: We see the PSP2 released fall '09. Graphically, it's basically the same as the current system. UMD drive ditched and replaced by 4-8gb on board flash memory. Other upgrades: 2nd analog nub, touchscreen, blutooth, motion sensor. Design: Flip-style or slider. Size: Think Iphone. Cost: $199. Will be profitable on day 1.
