Appears to be a bit hit and miss. My Hutchinson Fusion 5 both did not last long and both got cut with less than a 1000km on each Vittoria Corsa 2.0 I am running now are decent, but don't seem to roll very fast (or at least feels that way compared to my GP4000 clinchers I had). They hold air well and grip well in the wet. Ride is a bit harsh, but think I am running my pressures to high. Still at 7bar rear and 6.7bar front (I am about 80kg), maybe need to go closer to 6bar.
