Oh, and the non-branded CD-Rs...

"...Unbranded disks tend not to have an extra coating on the bottom layer to further protect the CD. A deep scratch could reach the compound and physically destroy the data; any scratch could potentially deflect the laser beam and cause a read error. "

from this site.


I also read that the black CD-Rs (though they look cool for audio) were designed for game machines and shouldn't be used for audio or data. (I'll try and find that page again)