I hope I'm not duplicating an earlier post; if I am, please point me to the right discussion. I am looking to build an external drive to store and edit home videos with my MacBook. Since I would like to use firewire (MacBooks only have firewire 400), which type of drive should I choose? To put it another way, I want to get a fast drive, but not so fast that I pay a premium just to have it "slowed down" by connecting it via firewire 400. Thanks for your help!