I went with the 40GB for a few reasons:
1. The lappie will be mainly for school work (CAD software/drawings), and
I have a 30GB mp3 player that I can use if the 40GB starts to overflow.
2. The 60GB spins faster => shorter battery life, the increase in
occaisional game loading speed didn't really justify...
3. The price, for 120 more dollars you get 20GB...I'd rather go buy an
external USB2.0 hard drive that has significantly more space for $200.
Frankly, I just didn't need 60GB in my laptop...I have two 40's in my desktop and neither of those are full (yet). Hope my reasons help your decision...remember, buy what you