Hello everyone. I've posted this question in a couple of forums. I just want to get as a many opinions as i can. I am considering buying a new flash unit for my canon 20D. The Canon 550ex was one unit i was looking at, but money is an issue. My question is do any of you know if the Sigma EF-500 dg Super or the Sunpak PZ 5000 would be good alternatives?
-Chris