Lite-On Slim Portable Good?

I’m looking for the best cd-rw drive I can find, and through my research I have come to a conclusion that Lite-on will copy all most anything. I need to know if the Lite-on 40x external slim portable is just as good as any other Lite-On?

if it is firewire, it might be close, but no external device is gonna give you the performance of a internal device. the difference might not be noticable, but it is there.