I have the 166s now to, before that i had the 163
All i can say is that the 166s is louder and has a VERY flimpsy disc tray... i almost killed it the first time i put a cd in it and tried to close the tray by pushing it.
But now comes the good part
It reads weakly burned cd'rs better. Haven't really found a difference reading dvd through, probably because i haven't even tested a dvd yet... LOL
Oh well... :bigsmile:
Anyway, i would say it isn't worth the upgrade.... But if you can exchange the drive for free, do it (thats the way i did it :bigsmile: ).