Now that they have cheaper refurbished Macbooks up, I think I'm going to buy one today. I have bought many refurbished products before, but never one this expensive. I just wanted to make sure that there is NO difference in warranty, quality or anything when buying refurbished. Simply just a computer that has been refurbished but includes everything as if it were being bought brand new. Also I am definitely going to buy a new Hard drive for it immediately. I was reading around about the western digital 5400 rpm and 7200 rpm. Is it worth waiting for the 7200rpm or just go for the 5400? And is 500GB the biggest hard drive that I can put in my macbook? I want the biggest possible. What is the exact drive that is compatible with the macbook? Thanks in advance!