Matthew makes excellent points. I'll add a few comments if I may:
1) Brake performance is typically proportional to dust, as is rotor wear. The more aggressive the pad, the better it does in high performance situations (track) but also the more dust it generates and the quicker rotor wear. In the past, for me personally, I swap out my "track pads" back to street as well as their matching rotors (because build-up).
2) Many many many years ago I had a highly modified Corvette track car with aftermarket front brakes. The replacement pads from Brembo were expensive, and I found that performance friction would make a set for me, whatever compound I wanted, with just a tracing of the backing plate. Nice to see (I infer) that Hawk also does that now. The rotors were even more expensive ($350 each back in 1999) so I found a place in Michigan that would manufacture the rotors (I reused the hats) for around $95 each. I could send them the measurements, but since I didn't trust myself, I just sent them a used rotor and they made a set to match.
The Porsche fanbois often complain about brake dust and many of them order CCBs simply for that reason, not for performance.
