I own a 430 EX II and there is nothing wrong with it.
I see 580 EX II's coming up for sale and wonder if it's worth buying one and moving mine on.
I'm a newbie and don't, as yet do anything creative with flashes but who who knows once I start developing my skills.
I mostly use a flash in a disco environment, people dancing etc. As yet I've not done any off camera flash photography.
So if anybody can give me three reasons why I should make the upgrade or should I stay put.
Many thanks.


