What software did you burn with, the same on all burns?
I used the newest version of ImgBurn 22.214.171.124. on all the burns listed.
What speed/burner did you get 90-93 with?
It was 2 burns done at 2.4x with my Pioneer 115D 1.18fw MCSE bitsetting enabled. 1 was a 93 and the 2nd a 90 which might register a 93 if scanned at 4x instead of 8x. I will post images of those soon.
Only fair way to compare two spindles is with same burner/burn speed/burning software/scanner/scan speed/files.
Scanner is always the same, but I could probably do some consistent 4x scanning. Files are usually different (different Volumes in a 6 disc set). Burner has always been my 115D accept for that one 20A4H attempt. I've used ImgBurn for each burn as well.
I'll post some scans from my older batch of 20 and possibly try my Optiarc 7200A.