Aed, something else to consider - take a look at the discussions of Blank Media with Lite-On's vs. Samsungs.
You'll need to find Media that you can buy, so check out what's available TO YOU. That's important. Then, see if you can match Your Available Media to either the Lite-On or Samsung, and see if you can find discussions of those qualities.
The goodness of the drives - their mechanical soundness - is probably comparable, but perhaps there is one drive that is 'better' with the media that you can easily buy.
Perhaps that might be the best criterion - "good writing for YOUR available media."