Wow, the OSTs are *great*!
I picked up volumes 1, 2 and the Utaimasho song album from cdjapan. I'm debating whether to buy the cast image albums (boy, that'll add up in a hurry, and I'm *supposed* to be saving money here), but these are great so far. I haven't listened all the tracks yet, but the ones I've listened to up to this point are excellent!