If I do get a Macbook Pro, I will have to buy an external hard drive as 500GB wont be enough to hold all of my media. I was wondering how much faster Firewire 800 is in comparison with USB 2.0. I know that USB 2.0s dont run at their fastest speed, so I was wondering if Firewires are the same too. What would be the typical speed then? I need to know if it would be a better purchase since its pretty significantly more expensive than USB hard drives. Thanks.