I am a college student going to school for film. I haven't started my major classes yet but I thought I should go ahead and get an iMac to familiarize myself with final cut. My question to you is which one should I get? The 2.8i5 or the 2.93i7. They are both pretty powerful so I am trying to see if it will be worth the extra money to get the better processor. PS. I would get a mac pro but I just simply cannot afford it!