OK, I really need (want) a 3rd flash. I have a 580EXII and 430EXII now. The cheapest I can find for an SB-24 on eBay is about $130 delivered for an old flash that could die at anytime. A new 430 is $400 with tax so that is out, but a Nikon SB600 is about $300. So for roughly twice the price of an old SB-24 shouldn't I get the SB-600 even though I shoot canon so all the extra features are worthless to me? Or should I pay $100 for the Canon?? Arrrrrrr 2nd question, I use pocket wizards now. If I get either the SB-24 or 600 do I really need to buy a 4th PW, or can I take one off of my my 430 for the Nikon flash and use the 580 to set off the 430, or would I be losing something? I would like to order today so any quick thoughts would be appreciated, thanks.