Originally Posted by DrPete
+1. The new 10-speed 105 is especially nice. The performance gap between 105 and ultegra, already small, got narrowed a bit this year.
DrPete
Yep. And to take it a step further, the performance gap between 105 and Dura Ace isn't that great either.
As others have said, upgrade the wheels. Then you can take with you if when you decide to go to a different bike.