Well I made a small discovery on the MD downloads page. They actually list the OEM name and model of some of their most recent rebadges in the download link for firmware for that drive.
MegaSTOR 16x Double Layer (NEC 3550A)
MegaSTOR 16x Triple Format (NEC 4570A)
and I think we discussed the MegaSTOR 18X Triple Format MD-18XTFI was actually the Samsung SH-S182
I was looking around at all the various drives available and decided I did want to replace my HP dvd640i with another LS drive so I found a deal at Tigerdirect for a HP dvd940i (Liteon made) for about $59. (Found it $10 cheaper somewhere else after I ordered..naturally :a )
Then decided to add an NEC AD-7170A to the order since it was only $39 more.
So, I'm done for a while. Will prolly flash the NEC to Dee's bitsetting 103 when I get it, other than that..it should hold me for this year