[quote=pepst;2063841]Some Nexperia based Benqs (1620 - 1655) support also DVD-R overburning.[/quote] Have you found some trick to make BenQ drives overburn on DVD-R media?
The BenQ DW1620 doesn’t overburn DVD media at all as far as I know.
BenQ DW1640, DW1650 and DW1655 can overburn DVD+R media with some burning programs (e.g. CDSpeed and ImgBurn) provided that you turn off SolidBurn.
The same BenQ drives may succeed in simulation of overburning DVD-R media, but they fail during actual overburns of DVD-R media - at least when using the same method that works for DVD+R.
Plextor PX-712, PX-716, PX-755 and PX-760 series drives can overburn DVD+R media.
Since the outer edge is the most likely to suffer damage or have bad quality in production, I agree that it’s not worth the potential trouble and that it’s actually safer to underburn DVD media (burn to less than full capacity).