Dumb question, but the guys at the apple store are even dumber than me. I will be doing native dv editing in FCP4. Is an external 1394 drive a fast enough and reliable enough media drive? I like the idea of being able to transport my whole project if needed. I don't have an internal secondary drive and would like to do without if I can. Also does Firewire 800 add any noticable performance to video editing? Any comments would be helpful, thanks!