My stash of TDK SpeedX 48x (Ritek manufactured) discs is critically low. I have had amazing results with these discs (Max C1 errors/sector often 16 or under!) -- I am thinking of buying either a shed load more of them or a shed load more of the 52x ones... http://www.ketta.com/catalog/default.php?cPath=23 Are these manufactured by Ritek as well, does anyone know? Can anyone vouch for these? Thanks!