That is a big price difference! I don't know anything about them myself. I finally ended up with Ferrodo DS 2500s for my big brake system at $128.21 plus tax per axle. I have been VERY pleased with them. No dusting, no squeaking, and they seem to grab better when they get heated up! My Pagids were extremely dusty and major squeaking on the street. Everyone I have sent the Ferrodo way has been extremely happy with them.