I have used CCN i belive they are called, they have an e-bay shop, i got brand new 300mm ST170 grooved disks front AND back and green stuff pads front and back for just over £200 which was a bargain price, they do red stuff and yellow stuff pads. I would reccomend the red stuff, a disk is a disk is a disk not really much difference between disk manufacturers. I would avoid drilled disks though as they get stress cracks around the holes.