I don't know about that...
Nero Drive speed is good, but it can be over-ridden by software too. For example, K-Probe, K-Prove doesn't care if you have DriveSpeed running or not, it tests at what you tell it to test at. However, Drive Speed has over-ridden CD Doctor on me a couple of times when I wasn't paying attention. This says to me that Drive Speed is not as optomised for drives as it could be. I am sure that Plextools is not so easily ignored by software!
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media