If you go to Gateway and do a side-by-side comparison of this and the Plextor you will see there are three minor differences aside from the name (I don't like gawdy names on components anyway). Weight - .01 pounds difference. Buffer - plex has 2MB , qps has 4MB. Access speed difference of a few millisecs.
I'm almost positive it is a Plextor made drive for QPS. It could be that QPS also has a few Teac made units marked the same, but not sure on that suspicion.
Been eyeballing this drive for days at Gateway: with a discount code, the free shipping, and adding a 3 pack of cdrw discs the price is almost the same as this deal after rebate.
I've emailed QPS to find out who the OEM for the unit is, but no response yet. Maybe tomorrow. Rebate ends 31 March.