I wouldn't invest in it until you need it unless you have the option of them coming on your motherboard or not. Right now if you want to do video editing from your firewire compatable camcorder, firewire is the way to go. If you want backward compatability with USB, that wouldn't be a bad way to go either. Currently I don't think there is any hardware for USB2, but I'm sure we'll see portable cdrw's, scanners, and web cams taking advantage of the speed.