Earlier this week when I went to the shop to pick up my new backdrop frame I started thinking that it might not be too bad to have another strobe, and I walked out with a 580EX. I already have another 580EX and a 430EX, and I use them all as slaves with an STE2 wireless transmitter sitting on my Rebel XT. I haven't taken it out of the box yet and I'm wondering if I should return it and get back my nearly $400. For the amount I'm spending on these Speedlites, I could get Alien Bees B1600s or save for a professional system. Here's my thinking: 1. These Speedlites have no modeling lights, and the other options do - it would be fantastic to be able to see what the light is doing both to save time, and to increase rapport with models (more time shooting, less time going "oh wait, let me try this.." "wait a second" "let me just...") 2. Recycle time with Speedlites can leave a lot to be desired, especially an hour into a shoot. 3. More power with studio systems. The thing I love about the Strobist thing is the portability of a system built on battery-powered Speedlites. Shoot outdoors, carry them to clubs, don't worry about where the outlets are.. This makes it worth it for me. But, where are the practical limits of using them? Can you do something like this or this with Speedlites? Is there enough power to throw them into a chimera softbox or set up two of them behind a sheet for fill light? Especially as I have more and more ideas for involved shoots, I start wondering if I should stop buying $400 Speedlites and invest in a bigger system. Thoughts? Any of you doing elaborate things with a multi-Speedlite setup?