i'm looking to either upgrade or replace my 2000 trek 4500. a few questions though:
-i weigh 150 pounds. would i see any real difference upgrading to discs? i try to stick to dry trails, but they can be pretty steep with loose rocks here in jackson hole.
-any suggestions for a new fork? the original rock shox jett is showing its shortcomings.
-would it be worth just buying a new bike instead? i've been looking at the trek fuel 70, the specialized fsr xc, and the trek 6500 or 4500 with discs. any other suggestions?