After waiting for the new mac pros I'm now faced with a tough decision. Should I get the new one, would want dual quad core with discount it would cost me just over $3,000 or should I get the old 2.8 quad core which would only cost me $1800 for the base model. Right now I'm thinking the old one, I do video editing and this would be my first mac pro, any advice is welcome. I'd like to know the disadvantages to getting the older one.