Wow! They actually come in different widths! Very cool!
On another note..I just came from a few more LBS'(4 to be exact) and only one had a 8.5 in stock. Im gonna be honest...i dig the 8.4's paintscheme better for sure. The shop i put mike bike on layaway has the 8.4 there waiting for me and the 8.5 is on its way. Too bad Trek doesn't sell just the frames..Sigh...