I have a macbook pro. I am hoping to record directly from my audio interface through the laptop, to a portable external hard drive. As their are no more express card slots on the 15" pros, I cannot add a 2nd firewire port or even an eSATA port. I only record 2 tracks at a time and of course, don't want any latency. So the choice is Firewire audio interface (such as the Edirol FA-66) recording to a USB 2.0 hard drive, or USB 2.0 audio interface recording to a Firewire hard drive. Perhaps I should just record dircetly to the laptop and move the files to the external drive after each session, which would be a bit of a pain. Anyone have any suggestions?