Tired of editing HD video on my MBP. I love my MBP, but I need something that's tailored more for this kind of work. I've configured a couple of Mac Pro's, but I'm not sure which configuration would be better: One 3.2GHz Quad-Core Intel Xeon Nehalem or Two 2.4GHz Quad-Core Intel Xeon Westmere (8 cores) All other elements of these two configurations are identical: 8GB RAM, ATI Radeon HD 5870 1GB, etc. They come in at almost the same price (the Westmere option is *slightly* more than the Nehalem option, but close enough for me). Today, I do most of my editing in iMovie, but Final Cut is on the horizon. Thoughts?