You could check this... http://club.cdfreaks.com/showthread.php?t=179605
CMC gets bashed everyday, but the truth is that CMC media under reputable brands (TDK, HP, Verbatim..) is fair to very good. Not as good as premium media like TY or MCC, but far more reliable than most "cheap" discs out there, including Ritek MIDs.
From what I've read on this forum and others, most of the bad reputation comes from:
- questionable "el-cheapo" brands or unbranded discs, as CMC produces media of very different grades, from crap to good. So buying them unbranded or under a cheap brand often ends in crappy burns and coasters.
- poor firmware support in many burners until recently. NEC drives for example always burned CMC with good results, though Pioneer burners didn't until the 109 with firmware 1.08. Benq drives with SolidBurn burn "A-grade" CMC media with very good results. I've heard the LG drives do a pretty good job with these too.
As for stability, I have seen no complaints of fast degradation, only hundreds of complaints of failed or poor burns (for the reasons I mention above). No "time bombs" like Ritek (mainly -R) discs.
I burn lots of CMC MAG E01 discs (HP branded) in my 1650 and I've had no problem at all. I have no experience with AE1, sorry.