Hey! I am looking to get a mac pro for limited editing work... and then run windows on the side.... I will use the FCP 7, and photoshoppe. it will not be an intense editing environment, but I want to speed up some from the iMac i currently have.... plus have a nice bank of back up drives for video. I am shooting and editing 2-5 minute industrial videos at 1080 p So I looked at eBay, and I am thinking a mac pro 3.1 or 4.1... obviously a 4.1 would be better, but I want to know what differences there are between the two models.... can I get on well with the 3.1, or is the 4.1 substantially better or future proofed in some way that makes it a smarter buy... Thanks for your opinions!