Really I'm completely sick of this behaivour with DVD technology. They can't make any money on it anymore, so they just keep releasing cheap gimmick drive after cheap gimmick drive, and never think about firmware or proper media support. I have a BenQ DW1640, and a Lite-On 1635S, and a Pioneer DVR-111D, LG GSA-H22L, and a PX-716SA. I don't think there will ever be a drive worthy of adding to this combo, or replacing a drive in this combo.
BenQ DW1640 and Lite-On 1635S for burning questionable or B Grade discs
Pioneer DVR-111D for DVD±RDLs
Pioneer DVR-111D and Plextor PX-716SA for good quality DVDRs and CD-Rs
LG GSA-H22L for Lightscribe and DVD-RAM
Plextor, Lite-On, and BenQ for media testing
I can't imagine anything more that I'd need. Even disc copying can be done nicely by the Plextor and Pioneer models usually.
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