TL;DR: the grass is always greener on the other side, but Micro 4/3 is still the world's best mirrorless system. Also: technical limitations are good, not evil. This summer I moved away from Micro 4/3 and switched to not one, but two other mirrorless systems: Nikon 1 (for video and occasional telephoto work) and Samsung NX20 (for everything else). I argued that Nikon 1 as a video camera may not be better than Micro 4/3, but it was certainly better for me because of PDAF. I also liked the fact that I could have a telephoto lens which is both smaller and lighter than Panasonic 14-45. My reasons for getting Samsung NX20 were a bit more complicated. To put it succinctly, I wanted a camera with a better sensor than Panasonic and better ergonomics than Olympus. Well, after living with this setup for ~5 months I can say that Nikon 1 is great and will stay, but Samsung will be replaced by a Micro 4/3 camera and very soon. Actually there is nothing wrong with Samsung NX20. Its ergonomics are perfect: it's as small as Panasonic G3 and as comfortable as Panasonic GH2. The sensor is excellent, the screen is awesome (it's the same OLED panel found on the E-M5 and GH3) and Samsung lenses are great. Even the kit lens is very good, and 30mm f/2 pancake may be the best short-normal prime for any mirrorless system. However, there are two pretty big BUTs. First of all, I just don't love the camera. Something doesn't click between us and in the end I just don't want to use it. I noticed that I tend to grab the Nikon even when I know that the Samsung will produce much better results. The second issue is that I discovered that I really miss the "look" of images that I took with my Micro 4/3 cameras. At first this was very hard to pinpoint; however after looking through my favorite shots I identified the source of this frustration. It is common knowledge that Micro 4/3 sensors are more limited in dynamic range and noise performance than their APS-C counterparts. But this is actually their strength, not weakness& Images from Micro 4/3 cameras with Panasonic sensors, when pushed hard, take on a somewhat gritty, hard-edged look which I find very appealing. When pushed really hard, they sometimes start looking more like a painting than a photograph. I also discovered that the excellent dynamic range of Samsung's sensor made me lazy and sloppy. With my Panasonics, I knew that bad light = no shot. With Samsung I constantly try to cheat and take photos in too flat or too contrasty conditions thinking that I somehow might be able to save the image in PP. Needless to say, it never works. That's why I'm going to replace Samsung NX20 with Panasonic G6. Yes, I was very vocal about it having the same "old" sensor as the GH2, but now I'm going to buy it precisely because of that sensor with all its strengths and weaknesses! I'm also going to buy a 12MP Micro 4/3 camera because I think this ancient sensor has better colors than everything else on the market (except Sony DSC-R1). This revelation has also had a nice side effect of curing me of any illusions that a full-frame camera may somehow improve my photography. If anything, it will make it worse — for reasons that I have already addressed. Peace.