Help me choose a 2nd flash. I currently have a 580ex

[JDubya]

I'm ready to add to the family :)

I want to do more with flashes as all I have now is a 580ex. I have an off-shoe cord but I want the ability to use 2 flashes. What would you recommend? Should I go for the 580ex II or something cheaper?


For transmitters, best bang and quality for the buck, which would it be? PW? ST-E2? Ebay?

Thanks...

[Curtis N]

Sunpak 383 + an optical slave.
And a PC cord for backup.