I know these two drives are based on the exact same chipset. It just seems there have been several reviews with the two, (Anandtech and CDRinfo for example) and the Plextor PX-740A seems to produce way better quality discs than the Benq 1640. The total errors on the Plextor tend to be almost a third less than the BenQ. I am just curious why someone might choose one over the other. Right now I would imagine the quality would outweigh the price. Comments?