I'm going to buy my first ever Mac in a few weeks time. I will buy a iMac and will use it mainly for editing high definition video on Final Cut Express. Is the 3.06Ghz iMac worth the price over the 2.8Ghz model? Also will the faster graphics card in the 3.06Ghz iMac make playing and editing video smoother? I will not use it for gaming at all by the way. I would want to buy brand new and not refurbished as it will be my first ever Mac and I don't want it to be all scratched up and used. Thank you for replies.