Don't really do China Town apart from the odd meal. Dunno, really, Broad Street seems pretty standard from what I've seen of most other cities but it has some nice little places directly off it (Brindley Place for one). Bullring area is nice, though.
I find it difficult to comment because I don't really like any cities, but in my opinion, it seems pretty good compared to others.
Greg's right - I guess it's a mixed bag really. I go to the Bullring for shopping and Broad Street for the occasional Saturday night out.