OK, did I buy a turd here? It seems pretty fast, but slows down to about 48x when burning Verbatim DataLife Plus 48x-rated discs. Hard to tell how good the burn quality is, too. CD-Speed says the drive can't report damaged sectors, my Plextor PX-504A shows all green (100% good), and my Lite-On 166S shows about 4 damaged blocks (but no unreadable).
The drive slows WAY down when ripping scratched/dirty discs too. But seems to do ok....