I used the ceramic pads from Summit Racing. Ceramic pads are used on a lot of new performance sedans. They have great initial bite and don't need to warm up like metallic pads. They are also much easier on the rotors, which is a concern with the K-H setup -- the rotors are relatively thin, and costly to replace. These were not particularly expensive. When I found these pads online, I bought them, even though I already had a brand-new set of Raybestos Premium pads installed. The Raybestos were OK, but the ceramics were a revelation. Lapping Willow Springs, I could late brake into turn 1 (from 110mph), and never had any fade.