The organics are cheaper , work OK , sintered metal AKA semi-metallics are better in adverse conditions but like to eat on the rotor . I found some Kevlar pads on eBay that stop great and seem to be a happy medium between the other two .

2005 Model . Two Fast Eddy stickers , a bell and a clock . She's Lola . She tinkles and keeps time . http://s649.photobucket.com/albums/uu211/britbike05/