Actually, to be honest, this is my first DVD burn, period, so I don't have anything to compare it to, but I am very happy with the results. I made a copy of Ong-Bak (4.29 GBs) with a 8X TYG02 DVD-R disk (got a hundred of 'em for around $50, which I thought was a good deal) at 16X in approximately 5-7 minutes, and it's perfect. Part of the reason I waited so long to go to DVD burning was because I could never find a DVD burner that was so generally well regarded as the BenQ 1640 seems to be, but now I wonder how I did so long without one. When I think of all those two and three disk crummy vcds and svcds I had to watch... lol.
Anyway, I'm a very happy camper!