Why is everyone picking on Xenosaga II? It's better then the first one, with the exeption of the different VAs. The battle system was fun and different, but once you got used to it, it was great.

Anywho On Topic:
Tales of Symphonia
Tales of the Abyss
Shadow Hearts Series (If you can find them)
Shin Megami Tensei: Nocturn (This is kinda hard to find too)
SMT: Digital Devil Saga (Again if you can find them)