I have a KB Clutch Engineering clutch, 6 puck ceramic sprung button centre (exedy) and a 1300kg pressure plate, I forget what material it's made of, but not organic. It was $420 including delivery. Been through 3 drift days so far, feels fantastic and very light on the foot. Never slipped, had many series of 3-4 clutch dumps from high 3rd gear rpm (stock rb30) and never changed the feel, hasn't heated.