I'm popping into this old thread because I just learned about this EL-100. There has been a practice of macro photographers rigging up the 270EXII's to serve as cheap macro flashes similar to the MT-24. I never made the jump on the 270 because I was waiting to see if a RT replacement came up, but it looks like it will be this instead. I'm wondering if anybody has bought one (or two) of these and used them in such a fashion. This place is showing the EL-100 in a dual array as a cheap dental photography option, so I'm not the only one to have the thought. With the EL-100 at $200, I'm not sure if I'm willing to pull the trigger. However, with it only taking 2 AA batteries, it might be light enough to balance on one of those cheap flexi-arms instead of the more expensive Wimberly arms required to hold up the 4-AA flashes.