Thanks very much for all the feedback. I think the more I get into editing in FCP the more I want a Tower with the latest hex core 32nm processors. Also many more hardware configurations available with a tower – like the faster RAID 0 configurations with a dedicated PCI card. One firewire 800 port and one express card slot is just bare bones editing.
MBP I7 2.66 8GB RAM, 120GB SSD, FCS 3, OS 10.6.4, 27in Apple Cinema display ExtremeStorms.com