Guess I'll be the odd man out...
For quality, I'd easily go with, in this order
For scanning & crappy 16x & 18x burns
For scanning & good 16x, but crappy 18x burns
Lite-On LH-20A1H-185 or 186
I've either owned, or do own, all of the following & use them on a regular basis.
I have no idea on the Samsung, maybe I'll buy one, one day.