I have an iHAS 624B and an OPTIARC AD5280S CB PLUS
I burnt a test 8.5gb ISO image (for test puroses) with the OPTIARC which was then verified by IMGURN.
I cracked open the PIF/PIE scan in DVDIFO PRO first using the OPTIARC as the scanning drive, the result was pure red with readings off the chart (Quality was -1%).
I then ran the same disc through the same scanner only this time using the IHAS drive, the difference was shocking , it was far from a perfect burn but the quality rating was around 50%.
Can someone explain a bit more about how these scans work with different drives, I also noticed that high numbers on the OPRIARC scan on sometimes remained green but if these were place on the IHAS scan they would probably be red.