So I have been photographing a bunch of events lately, specifically Sweet 16's. I've been doing my research trying to find a somewhat affordable off camera flash setup. I was looking at the alienbees b1600 heads (2 of them) as well as manfrotto stands. I have been able to get away with just using my 580ex2 with a gary fong diffuser and would bounce off the low ceilings (~15' high). The problem I encountered, which led me to start looking for a more powerful source of lighting, was that I had trouble bouncing the flash at my last event. The dance floor had a higher ceiling than then rest of the room, and this area was filled with balloons! I thought I would be ok bouncing in this area, as it was too far away from a wall to, but apparently I didn't get enough bounce and some of the images came out too underexposed and of course accompanied with a dark background. So a long story short, does anyone have recommendations for flash units? I was hoping not to break the bank with this first purchase of flash heads/wiring/tripods (!$1500). Has anyone had experience with Alienbees? They seem to be a favorite among the best bang for the buck. Thanks in advance.