Something you need to be aware of, if you weren't already. The recording and ripping speeds quoted for the drive are the MAXIUM attainable.
What this means in practice is that the drive will start burning at, say, 4x. After a coupe of minutes it will switch to 6x, then 8x, perhaps 12x then 16x. So the max burning speed will only be attained if two criteria are met...
a. You are burning a FULL disk-worth of data (4.3GB). The max sped is reached at the outer edge of the disk.
b. Your medium supports 16x wrtiting.
The same is true of ripping: the drive GRADUALLY increases speed until it reaches the outer edge of the disk.