[Klaus]

I was a bit disappointed but the Leica's OIS. As you may have noticed I did quite some shots in an old shipyard workshop. Many images came out blurred (by my standards which, I suspect, are higher than most here) despite not having used overly aggressive (long) shutter speeds. From that alone I'd suggest to consider the Leica primarily if you got a Panasonic camera with Dual IS. If slow shutter speeds are important to you on an Oly body, the Oly makes more sense to me. Technically the Leica is a little sharper - especially in the image center but it gives up that advantage due to a bit of field curvature which wasn't an issue on the Oly. Size-wise the Leica is clearly more enjoyable of course.