Originally Posted by
c_m_shooter
You could probably just put a decent fork on your bike and notice a big improvement.
http://www.performancebike.com/bikes..._400002_400205
You wouldn't get your money back out of it if you sold the bike, but the fork might just outlast the Trek and wind up on your next bike too.
Certainly this is a food for thought...
The guy at my local bike store recommended only Air-based full suspensions.