I have an iMac that was bought in 2006 and has been upgraded as far as it can go. Recently with school and work I have decided that I need an upgrade in performance and it only makes sense to buy a MacBook. But as I am in medic school and have been donating many hours to the hospital with no pay, I dont have much money to be spending, so I cannot get the usual best macbook out there. I need to get the best bang for my buck. It seems to me that the MacBook 15" model out there seems to offer the best performance with some ability to upgrade the unit down the road if necessary. The Retina display seems a little expensive for what I need, as well as I dont like that fact that it offers little ability to upgrade RAM....plus RAM soldered to the board scares me, not the easiest thing to fix if it fails. So I have really settled on the lower end 15" MacBook Pro, but now where to buy it????? Again I am trying to save some money while still buying from somewhere that will back it up. So far the apple store refurbished models seem to be the best answer for around $1500, but i see the same models at other websites for around $999. Does anyone know some other reliable websites to buy a MacBook through??