TDK certified plus - EXCELLENT! <====RULE!!!
TDK non certified(manufactured by Taiyo Yuden) = good
Tdk non cert. (manufactured by ritek) = BAD!!!!
Most manufacturers arn't that bad, the only one really to avoid is Ritek/CNC. I do believe most "standard" memorex's (most imat's too) are made by Ritek/CNC..Hint,hint,hint.

Verbetams for some screwed up reasons don't work on my Tdk/plex rebadge.
check osage's link for the most info on the subject.
If you really feeling patrotic. buy the cert plus TDK's. Made in the southern USA somewhere.. South carolina, i think?????
Skylark, what kind of burner you got?