I've been asked to do some portraits and head shots in some pretty remote locations, including some without power. There's no way I can drag my Elinchrom gear around, and since I just sold off all my Canon flash gear I thought I'd take a look at what's good and what's not for micro four thirds. I'll probably be using a GH4, but it's possible I could also opt for the EM1. Let's assume GH4 for now. Budget is, as ever, a consideration. While I have the Nissin i40 for a tiny walk about, I'm looking around at more powerful options for multi point lighting, so I've been looking in to the Yongnuo YN-560 III (I'd need three or four) and a YN560-TX trigger. These seem very well spec'd for the price. Are these as good as they seem? I'll also be using some brollies but could do with a softbox recommendation too.... Thoughts?