Shifts flawlessly, all the things i've heard about Shimano 105 components are true! A nice smooth up and down 9 miler for my first ride! It really does destroy climbs. On the downside I kind of tried too hard at the end and almost passed out when i got back home :D
Also, today I went to the ASU cycling and triathlon club meeting. Cool peopl.. sweet deals.. I think i'm gonna join!