Ebay, Hayes Brakes Pads, under search gets you several choices. Pricepoint sells sintered metalic. However, while looking, I see there are some that offer buying multiple sets and different compounds. As example, I see Ceramic and Kevlar. What's the best of these? I use ceramic on my car because they get grippier the hotter they get. Bike pads I figure don't get anywhere near as hot as my car brakes do so my curiosity is what is best? Sintered Metalic, Kevlar, Ceramic? Or something else? Anybody? Bueller? Bueller? Bueller?