I have the 05 t-mobile and absolutely love it!! There is a difference between between Dura-ace and ultegra, but not as much as between ultegra and 105. So unless you have the money just hanging round don;t bother. Remember your shifters, and deraille...
105 by a long way. There are 5 groupsets from Shimano for road bikes Sora - Tiagra - 105 - Ultegra - Dura Ace In this order. Sora is the entry level - very basic but functional. 105 is middle of the line - pretty good quality with STI levers like Dur...
Is Campagnolo the best cycling parts you can buy or is it Shimano ? I think it all comes down to what you can afford and what type of rider you actually are. If you put the Dura Ace, the Records, Ultegras and a set of 105s on four different bikes and...