Ive been using Princos for the last few months, without a hitch. (and hope they stay that way)
But Ive only just started to learn/use kprobe + other testing app's.
To the people who write an say "I used to use brand x - but after so many months they became unreadable..."
Did you run tests on the discs when you first burnt them - and if so, is there any diff between the results done then + now?