you just have to decide which is more important, speed or battery life.
anyone know what the performence differences between the 2 drives are? and what the battery life difference is? if you know what those differences are, just pick the one with the least disadvantage. or if its a deskotp replacement, get the faster drive, if its for portability, get the slower one.
man i would love to buy a new 17" pb, but i think i will wait till G5... if for no other reason then it will take me that long to save up enough...