I am considering to buy a new mac pro but I find it quite expensive. Anyway, if it is upgradeable and worth the money, I would buy one. I need the machine for video capturing (using Canopus 110), video-editing, Photoshop, Quark and converting video to DVD. I want a fast Mac. My dream is the Quad Pro Nehalem 2,66 , with 6 GB RAM and a good videocard. I have read the Geoforce 120 is rather slow. I don't play games. But if the Radeon 4570 is also faster with video-editing, I would go for it. The new Macs have only 800 firewire ports. Are these compatible with the Canopus firewire 400 using an adaptor? And would the Geoforce 120 be sufficient for video-editing on a Cinema Dislplay 30 inch? Or is it better to buy a Harpertown Mac? Can I get significant better results if I build a Raid0 with 2 drives? Thanks in advance for all the advice.