My damned 250GB drive just feels as though it is tiny. I have deleted all non-essentials files but basically it is totally full. (Not good for running OS X I know). I will have to get a new HDD, but is 640GB still really the largest size that is available in the 2.5" 9mm form factor? There must be a 750GB drive about to break on the market surely? Any ideas? Anyone with more knowledge than I? I can't seem to find anything searching. (I have a pre-unibody macbook pro so will have to make the swap myself but it doesn't look too complicated). p.s. before I get hammered, I already have plenty of external drives, but I need an internal one really.