The reason for my question is that the small form factor we seek soon becomes quite bulky. My intention of purchasing my Oly em-5 was strictly to shoot available light. I've recently become tempted in purchasing an external flash. My only qualm is that it suddenly throws off the balance of the camera. Its already not desirable in weight distribution as I throw on my 14-140 mk1 zoom on the oly. On the gh3 the balance is marginally better. I am not a master of light but I have full understanding of bouncing flash in any environment and have shot many events for years using the joe demb flipit giving dynamic light. If I add my spinlight 360 or Joe demb flipit (old version and newer plexyglass base style) the external flash setup is ridiculous on a small em-5. Are most of you guys/gals available light shooters? The em-5 small flash they provided in the kit is utterly useless for me since that simple flash is based on max flash sync of aprox 1/250. Thats now that great if you want to balance the flash for fill in certain light conditions. The reason I purchased the gh3 is for my wife so that she can have an onboard popup flash for documenting my kids at school functions. The gh3 is used as a glorified camcorder and point and shoot. I use it more for documenting casual events for friends and work functions. With my dslr gear I've used basically speedlights (5 speedlights ranging from canon 580 exii, 600 exrt and 430exii) and use them with pocket wizard flex for quick nasty studio session or 5 paul c buff Einsteins. On run gun events I shoot with a spinlight 360 and joe demb flipits. Size camera body is comfortable and more balanced. Do m43 hobbyists go crazy with external flash? I've usually seen natural/available light only...usually anyways. Just curious......... your thoughts? I just trying to determine how far I want to grow my m43 platform.