Looking at the specs for the 2100, I would say the wheels are the only thing that i might upgrade. Assuming you have a specific amount of money to spend, have you considered getting some nice clothes? Specifically, really nice shoes, some high-end shorts/bibs and/or a super comfortable helmet? Those are some of the things on my wishlist.
Another thing to look at is pedals. There are some really nice pedals out there and prices seem to be coming down. How about a good Heart Rate Monitor?
Hows about a whipround for a brain for randybarker99 since the threat about upgrading bike components, not making a fashion statement.
