My MCC CD-R media (Verbatim DataLife Plus, Yamaha 8X) reads just like the day it was burned, even 5-6 years later. My Ritek 6x cyanine, not so good, I can get good reads most of the time when slowing the reader down to 4X. CMC media? Well, good luck. Using CMC media for long-term data-storage is like playing the lottery. Sometimes you win, and sometimes you lose.