I just bought some of these tapes on ebay but have never had the chance to ever try them before,has anyone here ever used them and are they any good compared to the likes of TDK SA-X or Maxell XLII-S?They look pretty nice in the picture with there ceramic guides (Don't know if that meens anything?)But how do they sound?I have a top of the line Sony TCKA-3ES 3 head cassette deck..Thanks for any info and Happy Holidays to everyone..C Hugo.