after test riding both, my impression is that the specialized feels lighter, faster, and slightly more comfortable -- but the trek rode nearly just as well.
i think the trek LOOKS nicer and from what i've read online, the trek also seems to have slightly sturdier / better quality parts, esp. the tires. i believe the trek's tires are also wider, which i take to mean the bike would be better suited when leaving the road -- that'd be a plus for me.
the sirrus had smoother shifting than the fx, but i'm not sure if that was relative to the wear & tear of the floor models or the level of upkeep at each respective bike shop ...
does the gap alter much when stepping up to the fx 7.3 / sirrus sport? i don't mind spending the extra money.
HELP! this is my first bike purchase, and the first bike i'll be riding since i had cheap mountain bikes as a kid/adolescent. i would use primarily for commuting. what to do?