BLACK "Smart Buy" 80min CD-R

[Bishop]

Do anybody know these CD-Rs? Are they good protected against UV? I got a sample of these CD-Rs for testing use. Until now I could write Audio with 16x (PlexWriter 16/10/40A) and haven't had problems reading it on a "sensitive" player. Strangly I got much problems with reading when I burned a TDK Reflex 74min with 12x speed. The "sensitive" player couldn't play the first track (sometimes it couldn' t read up to track 3!)
I always thought TDK produce excellent products, but I got better experiences with non-brand CD-Rs!