Hey guys I need some helping choosing between the CAAD9 with 105 and Trek 1.5. I really want to get a Cannondale CAAD9 with 105 components but my budget was really for $1000. The LBS's lowest price was $1300 for a 2009. The other bike I am considering is a 2011 Trek 1.5 with Tiagra components for $900. Should I just get the Trek since I am only using it once or twice a week to commute to work (10 miles round trip) and hopefully some riding over the weekend? Will I notice that much of a difference between the Tiagra and 105 components? I tested out the CAAD9 with 105 and that thing shifted awesome but the ride was a little stiff. Any advice will be much appreciated.