I am quite new to photography (definitely not a pro). I am slowly learning, step by step. I started my M43 purchases with a GX1 and then moved to E-M10. I love this camera. My next purchase will be an external Flash. I would like learn how to use it, and hopefully to take better pictures with it. Possibilites are: - Metz Mecablitz 64 AF-1 - Nissin i40 - Olympus FL-600R I think the first 2 flashes are M43 compatible. At least some articles say so. But as far and M43 specific functions, compatibility with M43 cameras, is the Olympus flash better than the other 2? Choosing any of the first 2, would I be missing out on any functionality that the Olympus could do? This is the part that I don't quite understand. Could someone help me and explain this? Thank you!