I'm attending an art school in the fall, and have been waiting to purchase my macbook for a number of reasons. I'm torn between the 13 and the 15 inch. I'm going to be running the adobe creative suite on the computer so im wondering if space will be an issue with the 13 inch, but i've used one before and they dont seem cramped at all, but that may change if i need to edit bigger projects. I'm also thinking about buying refurbished to save 500 bucks or so, is there anything in the brand new MBP's that i will absolutely need? I'm also waiting to buy my laptop until apple will be brings back the 'buy a mac, get a free itouch' promotion, when will that be starting? so my question are do i go with the 13 or the 15 inch mbp? should i buy refurbished? and when does the buy a mac get a free itouch promotion start up again?