How much faith do most of you but into the Qscan results?
I used both my 1610 and 1620 and no matter what disc I put into either drive, Qscan says nothing above 4x is acceptable.
I used 4x discs (OK I can understand that I guess, although, it says right on the box for the 1620 pro that "it can write 8x media at 12x!!") and also 8x discs, and it stills says " not recommended" at that speed.
All the media I tried was top grade, ie. Maxell MIJ, Fuji MIJ, and RiData (which has given the best results for most of my burns).
Anyway is the app. something most of us here rely on?