I would love to have a CAAD 9 frame as a built up SS bike. They are simply some of the nicest riding Al frames out there, and stiff in the BB. Also, I doubt the conglomerate here who pooh-pooh nice road frames in favor of "true" track frames have ridden a CAAD 9. I have not ridden a Yamaguchi, but I have ridden a that Cannondale in geard form and its FAST.