ok so i just ordered a 15" 2.4ghz 2gig with 200gb hd @ 4200 rpm personally i dont think it will make much of a difference. wont be doing anything too intensive (fair bit of adobe suite, 3d modelling, others associated) so the extra 40gb will be handy. i also think that the average mac user wont be pushing their mbp's to the limits constantly. anybody else done the same? (i havent seen too many say they have this option - if you havent, why not?) thoughts?