<<Why would you want to waste your money on a SCSI version? I mean, 12X is 12X, it doesn't matter how the data gets there, does it?>>
No it doesnt. But Plextor is still making some killer SCSI CD-ROMs, so if you want to match a pair of Plextors for on-the-fly copies, it'd be nice to have the burner as SCSI as well.