I'm planning to buy a hybrid bike from the Trek 7x00 series for use around campus. I'm quite new to hybrid bikes. May I know what is generally the main difference between the FX and non-FX bikes from Trek? From the Trek site, the FX bikes are said to be for "fitness workouts and training rides". What feature of the FX bike makes it appropriate for such use? The FX bikes are also generally cheaper than the non-FX bike for the same model number. Any tips would be greatly appreciated.

Found a post addressing my question: http://www.bikeforums.net/showthread.php?t=92007