Toradora's OP sounds a little bland to me, but it's possible that it'll grow on me by the end of the season. I do like the animation, though, as it feels they actually spend some effort on it (as compared to the loss of an ED).

Toradora's OP is pretty nice, but I think I prefer the ED (song).
Overrally there's plenty of good songs this season, and some might still grow on me after awhile.

Wow. Make sure you give Kurozuka a watch. I just watched the first episode and wow, this looks absolutely amazing! I can sum it up in two words; Beautiful and Brutal. I'm left speechless.