MAC PRO - Previous Gen (Harpertown) VS Nehalem ??? Hey there, I'm in dire need of a new mac, and am debating the options and would appreciate any input and feedback. Mac Pro 8 core 2.8, 3.0. 3.2 ghz- Previous Gen w/ HarperTown Processor?? OR... Mac Pro 8 core 2.26, 2.66, 2.93ghz w/ Nehalem Processor?? The cost vs. the speed / power and performance benchmarks are all over the place. Wanted to know what people have experienced personally, rather than read. It's mainly needed for Final Cut Pro (HD footage) & Pro Tools. Thanks in advance!!