The TEAC DV-W524GSB and the PLEXTOR PX-L890SA should be LiteOn iHASx24 B clones. They should definitely not be A series drives. While I can't guarantee that this is the case, and unless someone has any evidence to the contrary (which I haven't seen so far), I would assume that neither of the two manufacturers have switched production to the C series while maintaining the same model name for these drives, so they are probably still B series clones.
Finding one of these in stock might not be that easy though! Try a Google search, or Google Shopping. I've seen the TEAC available on Amazon.uk, but obviously availability depends on where you live. If you can't find them at established retailers, then eBay might be the only other choice.
Forget about the Pioneer, it is QSI clone not a LiteON, and hence incompatible with iXtreme burner max.