Samsung WriteMaster SE-W164 16x16x External DVD Writer
 

The Samsung WriteMaster SE-W164 is a USB 2.0 only device and sports a rather impressive maximum writing speed of 16x for single layer DVD media, 8x DVD+R DL burning, and 4x for DVD-R DL burning. That is smoking fast even when compared to today's internal DVD burners.

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NEC, Samsung, BenQ, Rosewill 16X, Double layer, I have them all. BenQ is the best in my experience. And, Intel P4 system is faster than AMD64 in DVD ripping.

NEC is DVD+/- DL 6X; others are either + or - and less than 6X.