Once again I have to say Pioneer DVR-111D. Excellent drive, really good firmware support, good burn speed. The only thing missing is media testing abilities (and to those who say Pioneer's CAN test media, I'm meaning in more then a purely technical sense).
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