Some Lite-On models are also capable of gdroms (for instance I have a SOHD-167T which supports it), but they're nowhere near reliable and foolproof as the Plextor (the swapping often doesn't work or it doesn't read well.. the plextor has no such problems: just close the tray and it works).
With that said, the PX760A is propably the best drive for dumping out there (it supports overreading and you can use px_d8 to detect any write offset), but finding one can be difficult these days.
