I have been playing four about 10-12 hours of BD and I just quit. I couldn't quite get into it. Maybe it was the annoying voices or simplistic combat...I don't know. I just really really didn't like it.
EDIT: Sorry if I wasn't much help...I just haven't played far enough to really tell you it gets better. I got it for $19.99 though, so I guess you get what you pay for.