Greg scoffs at worrying about rotor wear, but his rotors are cheap and don't require pressing bearing races and all new bearings at every rotor swap, like my car does. And my rotors are getting to be tough to find, and pricey. ($70 each, plus bearings plus pressing, etc).
Like Greg, I run the Carbotechs, after being frustrated by Hawks.
And they are better in every way EXCEPT they chew up and spit out rotors too quickly, compared to hawks.
But, I wanted to go fast, so I bit the bullet.
With the need for proper bedding, disc and bearing swapping, and limited track time, I didn't test other pad compounds or makes.
This on an IT7 with pretty small front discs that are hard pressed to cope with the speeds.