I really like my full carbon bike. I got the Ruby comp with full 105s, but for 06 the 105 is now a 10-speed. I have had lots of wrist and shoulder problems over the years (including an unhealed broken collarbone) and the smootheness of the carbon just makes riding so much more comfortable. I figure it is easier to upgrade components as time and money allow than to have to go through the whole purchase experience to upgrade to carbon in the future.