I have also recorded some cheap orange "A-Grade" G04s which look like low quality discs. The result is worse than the PrimeOn G04s. I will attach an image soon.
The same cheap G04s burn on a friend's Toshiba 5112 DVD- burner pretty well. When I scan them in my drive, PI average is about 30 - while PI average on my burner is about 90. My discs also cause problems on my standalone player - while the same discs recorded on the Toshiba 5112 work perfectly.
I know that some LiteOn drives do not work properly with DVD-. But some users have no problems at all and MUCH better Kprobe scans with their LiteOn drives.
My drive was manufactured in November 2003. Do you think that DVD- burning quality is better on newer drives which have been manufactured later, for example 851s? I do not want a recorder from a different brand since only LiteOn offers bitsetting.