I hear raves about ceramic pads and intend to try Hawke's version "one of these days." I currently use HPS pads for the street. Minimal dusting, linear progression, and very easy on rotors. When I enter an autocross or head to the track, I switch to HP+ pads (love those C5 calipers). HP+ pads are heavy dusters, wear on rotors, and, like HPS pads, are linear but, ONLY UP TO A POINT. +'s transition from mild to heavy braking (IMHO) borders on violent but NOT unpredictable. The difference between the two pads on the track is that +'s have never faded on the track or on an autocross course in my application. I find +'s impractical on the street because of the heavy dusting and rotor wear. HPS's will begin to fade after about 15 minutes of hard braking.