I put about 30K miles on mine. Decided it was too stiff which may have had to do with running 23s @100psi or higher and the 3T Mutant bar and stem combo.
Bought the Gunnar and had them both for a while. Same tires and wheels and when I would get back on the Cannondale the difference was startling. Bone jarring, but not as stiff as the Tesch. I have a pic of it before I sold it but can't find it right now. It went to a good home.