I have burned close to 500 of these disks from the 25 spindles and they have been perfect. Two months ago I went to re-order and the supplier only had 50-packs.
The first two disks failed to verify after burning successfully. Since then I have verified every disk and scanned about 25% of them. The results are not great, at best PIF total is around 3000 with a max of 3.
After 40 disks there have been no further fail-to-verify disks, however, the disks I have re-scanned concern me greatly.
The following three scans are of the same disk. The first was taken immediately after burning it, the second a month later and the third today.
http://club.cdfreaks.com/attachment.php?attachmentid=131188&stc=1&d=1197771641
1_LH-20A1P_KL0N_11-October-2007_00_14.png
http://club.cdfreaks.com/attachment.php?attachmentid=131189&stc=1&d=1197771641
2_LH-20A1P_KL0N_02-November-2007_16_18.png
http://club.cdfreaks.com/attachment.php?attachmentid=131190&stc=1&d=1197771641
3_LH-20A1P_KL0N_15-December-2007_14_02.png
Correct me if I am wrong, but these disk are deteriating so badly that they will be unreadable in a few months.
The batch number is GH000172. The disks were written at 16X on a Plextor 716SA, Liteon LH-20A1P, Pioneer DVR-112D and a Liteon LH-20A1S.