Firewire or USB?

PC World:

From our speed tests, it’s safe to say that Apple made the right choice switching to FireWire 800 from FireWire 400 on many Mac models. Although FireWire 400 is faster at most tasks than USB 2.0 (even though FireWire 400′s theoretical bandwidth is lower than USB 2.0′s) it isn’t always, or by much. If you’re looking for speed, FireWire 800 crushes USB on both systems in all four tests we ran. FireWire 400 is a pretty good choice too in most cases, but it’s modest speed advantage might not be enough to warrant paying extra for.

I’m not sure why anyone ever doubted this, frankly.