I hated the cool carbons on the track. They had terrible pedal feel and became very spongy at the track. I was on ATE Type 200 and SS Lines at the time and I really hated the pedal feel. The brakes itself didn't keep up with the heat at Laguna Seca or Buttonwillow. I brake faded them within the first session and was pissed the whole day that the brakes could not even do a full session.
My personal preference is to stay away from Cool Carbons as a "dual purpose" pad.
HP+ squeal like no other. A high dust pad with mediocre track pad properties. IMO not a good track pad for our heavy cars.