I am already so much happier with the iBook G4 than I was with the Powerbook G4.
Size matters not, sayeth Yoda, and I agree. Twelve inches suits me just fine (what man could complain).
And I can tell already I won't suffer the dents that aluminum body did.
But the huge plus-up to me is this: the keyboard is so much more slick.
Typing on the Powerbook felt like those electric pianos with no-resistance touch: unreal and thus harder to play. The iBook keys feels naturally resistant is a very familiar manner. Already I am typing about twice as fast--as twice as accurate--on this machine than the old Powerbook.
I am thoroughly delighted as a result.
Man's gotta feel comfortable with his instrument if he wishes to be master of his domain.