@Memento: I saw a Benq 1640 for sale here on this forum second-hand. I'm not sure how long those last, but they're really good drives. That's a nice tip there about the Asus DRW 24B1ST.
@abhaybhegde: Pity about that, but it should be okay unless the hardware reading is picky. In general, if you want to know which optical drive is good try club.myce.com. I bought the Sony DRU 870S on their recommendation (I was unable to find drives rated better), and learned there that the LG GH22NS50 (which I also own and had trouble with) was crap. Until then I was wondering why only one out of 3 backed up games would play well even though the original discs worked.