Great pads, used sintered through gritty peak district winters and organic ones in summer!... as good as any 'genuine manufacturer' pads but lots cheaper, i even regularly recommend to other riders!. fast postage too.
I ride these pads in awful conditions ie millstone grit and mainly in the wet and they stop dead every time and they wear incredibly well compared to the original Shimano pads. I cannot give them more than 3 stars unfortunately as they are the nosiest and therefore most embarrassing brake pads I've ever used. I'd like to try the kevlars but I'm sure I'd be through to the metal in a couple of days.
These work similar to any other decent quality sintered pads I've used, mainly Shimano and Goodridge. They're no better and no worse, but a fraction of the cost, and they last longer than the semi-metallic Superstar pads. Bargain.