BenQ DW1640, no question about it. Nothing else comes close in overall function and performance. It supports way more media then any other drive on the market (literally, there is not a single other drive that can compare in media support!!), burn speed is quite good, although LG is faster. Burn quality is VERY good, but probably Pioneer and NEC might do a bit better on a small handful of MID's (and not MUCH better). And the extra features on the BenQ DW1640 put even the PX-716A/SA to shame.
There is very rarely a time when a drive stands out so far from the rest of the competition, but this is one of those times, and the DW1640 is that drive.
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