I'm a video editor, who's enjoyed having my Mac Pro for the power, but as iMacs keep getting better that advantage isn't as apparent. Even if the new ones are still 4-core, their benchmarks may well be better, and I'll have thunderbolt going for me as well. I own a Mac Pro 2,1 Xeon 8-core 3.0 Ghz w/ 12GB memory, 1TB ATA HD, and a 1TB RAID storage. It looks like I can probably get in the area of $1500 for it on Craiglist. Thoughts?