Some of these drives are plextor, some are sanyo. I suspect that most are sanyo since I hear of a lot more issues with the sanyos than the plextor. I.E.- pepople returned them, or sent them back. I got one of these a while back( not refurb) from BB for $100. I got a rebadged plextor, and it works great. I think maybe that the sanyo's are the 12x4x32, but not sure. Mine is the 12x10x32 and it has burnproof.