Hey all! I'll be starting uni very shortly and I'm planning on getting a 15" MacBook Pro since I'll be doing a fair amount of image and video editing. I've decided I'd like the high-res screen but I can't decide between the 750Gb 5400rpm drive or the 500Gb 7200rpm drive. Any suggestions? Also, is it worth waiting a few weeks to see if Apple update the i7 chipsets as has been rumoured? I'm not sure whether to bother or not as I could get the back to school deal and get £65 ($100) credit in the App Store. If I were to buy the current model and Apple released an update a week later, would it be possible to return and exchange my current model for the newer one? Thanks in advance, guys!