For maybe 7 years or so I've been die hard SLR user, and my main camera has been the Nikon D300 with the older Sigma 24-70mm F/2.8 lens. That has been a great setup for everything I do except at mobility. I've been eying mirrorless cameras since their introduction but decided against APC mirrorless because the cameras and lenses would not be too large a combination and against the Nikon 1 due to the lack of depth of field because of the tiny sensor (and I wanted more resolution than 10mp).
Well last weekend I finally had the money and found a (nearly) perfect combo of body and lens. Got a Panasonic GF3 with the 14-42mm power zoom lens. This combination gives me a large 4/3 sensor and a decent range zoom lens that is pocketable (depending on how loose the jeans are). The eBay'er I got it from had been holding onto it since black friday and they listed it for a price that was too good to pass up, and I can justify taking with me on my motorcycle up into the mountains with out too much worry.
The good: I shoot only RAW and the picture quality from the camera is pretty good for a camera that came out in 2011. The image sensor is not quite as sensitive as the D300, but should be quite suitable for what I want. The build quality is quite good for the camera body, and the mechanical shutter sounds and feels nice. The lens sharpness is just fine, it wont win any awards, but it also probably wont disappoint. The auto focus is also super fast in anything other than a dimly lit room (at least with the PZ). The touch screen works pretty well as well.
The bad: The in lens image stabilization is the only thing I found disappointing about the lens. I found it gives only 1 or 2 "stops" of stabilization which would make it the least effective on lens or in body stabilization I've ever used. I've even found the Nikon 18-55 and 55-200mm VR lenses to be 2-4 "stops" effective. The camera UI is also a bit disappointing, and it's taken me since Monday to finally get used to it, and adjusted to my liking.
So for anyone looking for a ultra compact Micro 4/3 setup, I can say for sure, get the 14-42mm PZ lens because of it's compact size, then get the camera body you want. In the future I will probably upgrade the body to one of the newer more "enthusiast" class cameras or when I can get the Olympus OM-D for cheap.
For laughs, here it is next to my D300