I have the Yamaha 16x 10x 40x CRW2100EZ and it rocks, Copy a CD 654meg in under 5 minutes, 4.65 to be exact. It has an 8 meg buffer, using Pony 16x media
I don't know where you get your info, send some links or something as I want to checkout the reviews also.
All I know is that this baby flies.