Thanks for all the input guys. We actually found that OWC sells official Apple Superdrives for extremely reasonable prices, so we just went with that.
As for PatchBurn, while I'm fine with using that kind of thing on my own machines, I used a patch once to enable a Samsung CD burner in our labs, and when we upgraded to 10.3, it stopped working. We waited for a month or so before the patch was updated and that was bad to say the least, so I'm not inclined to go that route again in the labs.
Thanks again everyone.