Let's say you had the choice between the Trek 2200 and the Trek 5000. The 2200 has full Ultegra components on an aluminum frame with better seatpost, handlebars, stem, seat, and wheels. The 5000 has a TCT Carbon frame with 105 components and an ultegra rear derailler, and other things a step down from the 2200 (as mentioned). If they are basically the same price, which would be the better choice? Does the carbon frame make that much of a difference that it makes up for the lower components, seat post, handlebars, etc?