Memorex media (all types) are in a class by themselves. I have had way more CDs, MDs, floppies, cassette tapes fail with the Memorex label than all others combined. My experience with Memorex MDs has been abysmal. Any time anyone sends me a Memorex CD, I quickly copy it knowing that it's a matter of time (not long) before it can't be read. I find it truly amazing that their quality is so bad across all media types. For MD, stick with Sony. For CDs, go with Taiyo Yuden (order them in bulk and don't look back).