For what it's worth..you can get external batterypacks for the 580EX flash. I think it's called CP-E4and CP-E3 being an older model. I'm sure this will increase your amount of flashes, but I guess it can only fire up one. And I have no idea how it competes with the Vagabond Sean has. Anyway, external batterypacks do exist []





Edit: Oh...never mind [:$] I misread the whole thing...