I agree with jbissell. It's the Cubs or Cards division to lose. However, I believe that Cardinals are better than the Cubs.
WRT to the Cards, I think they will finish with around 88 or 89 wins. It appears that they have fortified the lineup with the additions of Mark DeRosa and Matt Holliday and if the pitching continues to perform at a high level, I don't see any reason why they can't win the NL Central. I certainly believe that they are the best team in the division. The Cubs are there only real competition, but they have some holes.