Ok I don't want to start a long thread on pros and cons of the units just to let everyone know. I don't want that thread. lol!! I want to know what is gonna be good for what I want to do. Here we go. Right now I own a 580ex II flash. I want to be able to use it off camera with a soft box. Now I here with radio poppers you need to flashes to make there system work since the transmitter does not connect to the hot shoe. is this true? I hate that radio poppers don't give good enough example to how the stuff works. I know since I will be using a softbox with my 580ex II I won't need ttl or won't be able to use it anyway. I also want to be able to expand out later and be able to control another 580ex II when time comes and I got some extra money. Also if I go with either the pocket wizards or radio poppers which models support High sync flash? I was also looking into the new jrx system from radio popper but it doesn't say anywhere that it can do high sync speed flash. I also emailed them and they came back with a answer that was totally different then what I asked. Im a little wired and little tired. Can someone that is famillar with either one of the systems help me out? Thanks, Brian.