i have a powerbook g4 and then my custom comp with windows xp. i love my powerbook, it is soooo sturdy. i cannot tell you how many times i have dropped this thing and it still works great. but i have to say the lack of programs that support mac osx is a turn off. windows also does have its turn offs. the annoying pop ups at the bottom of the screen (though os x have it too). overall i would have to go with windows, just because of the simplicity.