Don't forget the reader will be the limiting factor here (except if you use USB 1.1 of course). There are HUGE difference between them and each one is good at something. Some are very good at reading CF but bad writing them and the opposite for SD cards and vice versa, you see what mean.
Also whatever the theoretical lmimits, Firewire is about everytime faster the USB2: often a bit, sometimes a lot. But when you'll see the price of a firewire card reader, you'll buy the USB one IMO. ---------------------- Thibouille ---------------------- *ist-D,Z1,SFXn,SuperA,KX,MX, P30t and KR-10x ...