has anyone used both the 1 ghz and 1.2 ghz ibook 14 inch models. i was wondering if the extra processor speed was noticable. im on a very tight budget, so the extra 200 dollars isnt something i want to spend. i would rather get the bluetooth and apple care. later ill add airport, and more memory. one more question: do you think if i had more memory (maybe another 512) i wouldnt notice the processor difference as much