I just purchased my Trek 1.2 about 2 weeks ago and really got into cycling. I've already found the weaknesses of the 1.2, mostly components. I knew nothing about components before I bought the bike but have learned quickly that the 2203 shifters/front dr are not going to work for me. Also I bought a 60cm and I'm pretty sure its quite a bit too big for me. The bike shop has been nice enough to allow me to trade up the bike to and get full credit for the 1.2. The shop only carries C'dale and Trek.
Trek 1.5 = Full Sora w/Tiagra rear DR @ $950
Cdale CAAD9 6 = Full Tiagra @ $1050
Trek 2.1 = Tiagra w/105 rear DR @ $1150
I'm 6'0", 270lbs and in relatively good shape. I've averaged nearly 100miles/week on my 1.2 and think I'm capable of at least twice that once I get comfortable.
Based on what I've read I'm leaning toward the CAAD especially because the 2.1 is probably just out of my price range. Any input? I'm still very much a newbie and didn't know what any of this even meant 2 weeks ago.