This is a Verbatim 2.4x DVD+R9 disc burned at 4x using the BenQ DW1620 with firmware B7P9. The disc was then tested in the same BenQ DW1620 at 8x. As you can see, the disc is fully readable, but could still use a little tweaking in quality at the point of the layer break to the end of the disc. I'm going to try to run a few more tests (K-Probe and Plextools) when I can, but I'm now in the middle of the next review, and don't want to hold it up too much
I noticed that my results were not quite as good as CDRinfo's... this is possibly due to media quality fluctuations, but for this test I used one of the Verbatim Dual Layer discs that BenQ themselves sent to me, so I would expect mine to be of very good quality. On the other hand, it was also in a paper sleeve, so there may have been minor scratches I didn't notice.
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media