Never used Racetecs but I have had 2CT's on my bike for years now and I simply wont budge and move to another tyre.
Brilliant grip, good wear rate and the thing I like best about them is that they don't seem to go "off" like some tyres do near the end of their mileage life and start tramlining all over the shop or feeling like you are riding on a carpet of marbles.
Quality hoops and I can't see past 'em m8. :thumbup
Run them at the correct pressures though, nowhere near what the manual says to. 32F/34R is what most folks on RSV's run the 2CT's at.