I finally upgraded my 20 year old entry level Trek to a new Tarmac Expert SL4! I am so excited, the wait is kill in me! I don't really expect any measurable gains in performance, but expect to be more comfortable. The trek is a 56cm and everything points to me being a 54cm, so having a properly sized bike should be nice. I feel very anxious about scratching it or something, and also about having spent that amount of money, but I think I will feel better once I get the bike under me. Pics to come!