Ok, so I am thinking about asking for a Macbook Pro for a graduation present in May. I noticed on the 15 inch versions, there is 1 firewire 400 port, but on the new 17 inch version there is 1 firewire 400 port and one firewire 800 port. What is the difference?! I have a Mackie Onyx 1220 mixer with firewire card and I plan on using it with this computer, but I want to make sure it will still work alright. I read that firewire 800 is a speed increase, but does the Mackie Onyx take advantage of that, or is it designed to work with firewire 400 only? I also tried reading the manual, but couldn't find any sort of answer.