The best cleaner/polish I've found is L'Art du Son ... that is until a friend came up with his own formula. He won't sell it, nor will he tell me what's in it. Also, if you go to Radio Shack and buy the VCR tape eraser for $30.00 it beats just about any demag devise out there. Don't buy the regular cassette tape eraser, buy the large VCR eraser. With a good demag and the L'Art du Son cleaner, the CDs become much more analog like.