I did compare other black cdrs with the ProDisc that I got from RealityCheck and preferred the ProDiscs. Recently, however, on the strong recommendation of others I have decided to buy Mitsui/MAM-A 80m Gold Thermal cdrs, but I have yet to do so. I am thinking of going to a hard-drive digital system which would mean I would not need copies. I presently copy all my cds and extensively treat them.