Thanks for the replies.
As for the cyclocross, I really want something that is part MTB. They are also too expensive.
Actually I was just about to throw in the Trek Navigator 3.0, but the 7200 looks interesting too. My LBS doesn't have them in stock, so I can't ride it yet, but what do you think? How do the Navigator and the 7200 compare?
I was also wondering what you guys think about my rear derailleur. I have a 1994 Shimano STX on my Diamondback. The Navigator and Redwood both come with Alivio. Should I consider putting that on the new bike instead of the Alivio?
I think I'm down to the Navigator 3.0 or the Marin Redwood.