I rode the Kestrel the past couple of rides for a couple of reasons, first to try out the PowerTap and second to see if I wanted to keep the Kestrel. The first ride the PowerTap only worked part of the time for some reason. The second ride the PowerTap worked perfect. The Kestrel felt very comfortable but not as fast as the Colnago. It wasn't until after the forth flat last night that I decided that god was sending me a sign. I received the sign loud and clear, I must buy a new frameset.