So I've been following this forum very closely ever since the new air came out, and I'm surprised that I haven't seen a satisfying comparison between the core i5 vs i7 for 13 inch air. I was relying on cnet but they don't seem to have both products to make a comparison. So how much better is i7 compared to i5 for: game? garageband? imovie? handbrake? etc... Is it worth the price?