Yes, these TYs are burned on a Plextor Premium drive. When I disable PowerRec it burns up to the 76min mark and fails.
Although the discs were not burned at their full potential (52x) they are readable and have extremely low C1 errors when tested in plextools. When I said "wasted" I refered to the discs not containing any personal data rather these test discs were written on through plextools Write Transfer Rate Test. 2 discs were used for the plextools test and 2 for nero cd-dvd speed DAE Quality Test. For both test 1 disc was burned with PowerRec and one without PowerRec. For the last disc I burned random data on it to see if it made a difference and the results were the same.
I switch to TYs because for some reason both my plextor drives (premium & 708a) don't like AZO on the verbatim DLP CD-Rs. When I burn 68% into the disc the rest would error (yellow blocks in Nero's CD-DVD speed ScanDisc, and high C2 errors in the Plextools test)
I thought my problems would be solved if I swtich over to TY but now it won't burn up to 52x near the end. Interestingly I have these non-AZO verbatim CD-Rs made by CMC Mag. and they burn up to 53x near the end and are error free when I test them in ScanDisc and PlexTools C1/C2 tests.