There might not really be much dif in speed depending if the burner starts at 40x or it speeds up like some do,
And if you get the 40x,
do you really need to burn a cd in less then a minute?
the 24x will do one in 2.40?
it just was not worth the money for me to get a 40, I am really happy with the 24x and it only cost me 100 cnd,