Well, I've played and BEAT this game... so here's my input:
-It's a lengthy game, 60 hours to just beat
-Battle system is awesome, you can pair field monsters up to 4 and end up fighting 10 or so monsters on the battle screen, never gets old
-Story is okay, nothing amazing. Suffers a bit from the Tales series' notorious trend to MAKE UP WORDS (FONONS, for example. Here, it's BLASTIA)
-Adding to BLASTIA, there's a TON of BLASTIA jargon throughout the game that make no sense, but you just bear with it
-The game has phenomenal characters. Most to all are unique, and very likeable
-The game is a bit more mature than previous Tales games, and deal with death, murder, and a few sexually inclined scenes
-Game's a little tough too, more so than the previous ones I can remember.
Overall, I'd say it's a good game, and fairly fun. LOST ODYSSEY is better if you want an RPG for the XBOX 360, which is more mature, serious, better graphics, and crazy long as well.