I am thinking of getting a quad i7 iMac. Can't afford a Mac Pro right now and want to see what updates will bring later this year -eg. Lightpeak. In the meanwhile, I need something capable of editing material from a Sony EX3 and possibly RED. Is there a Firewire raid or other solution that would give me fast enough throughput to work with ProRes422? I'd like to be able to work in Color and send my image to a LCD monitor - probably with a Matrox box. Any other issues? Thanks.