It's a pretty good game that got racked with bad reviews thanks to the technical problems.
I have not beat it yet, thanks to my massive backlog. However, I just entered the 2nd disk, and disc 1 was pretty darn good.
Is it the best 360 RPG? No. But it's better than a few (Eternal Sonata, IU, EM, PSU).
The battle system is fantastic, and a breath of fresh air. Visuals are very good.
Story is OK. The problem is that the technical issues: frame rate drops, loading times, and texture pop-in murder the game's good visuals and gameplay.
If you are interested in the game, I HIGHLY suggest installing it on your HDD. It makes a massive difference. Load times (and there's a lot of loading) drop by 60-75%, frame rate drops are almost non-existent, and texture pop-in is reduced significantly.
I'd give the game a 7.9 overall between an NXE score and a non-NXE score. It's not as good as Blue Dragon, Lost Odyssey or Tales of Vesperia, but the best SRPG the 360 offers.