I have owned the HED 3c and Zipp disc since 2008 and raced the combo at the track at VSC, Hellyer and for road time trials. I think that combo is the fastest setup for most wind conditions. For windy road and outdoor track, I use 60 mm rim on the front. At the track, the HED is not as stiff as I would like and the same goes for the Zipp. And it is definitely not stiff enough for flying jumps at Velo Sports Center.