My motto - never buy OEM. Heard to many horror stories re: BenQ oem burners. My 1620 and 1640 are both retail versions, still alive and kicking with no problems.
My OEM Samsung and OEM pioneer bit the dust after 3 months.
My reasoning: While OEM and retail are "exactly" the same parts wise, there's no guarantee that the quality of those parts are "exactly" the same.
Ask youself this: which would make a company ensure that their product is good.....the product with it's name written all over the box and faceplate or an OEM version where the average consumer has no idea which company actually made it.
Of course i could be wrong, but im just playing it safe. I'd spend the extra 20 bucks or so and not worry about the RMA process.