I have to get over my severe case of SSE (sensor size envy). During the past two years, I've tried several alternative systems (Fuji and Nikon), but keep coming back to M 4/3. I liked a lot about my Fuji XT10, including the film simulations which led to those great Fuji colors. I wasn't a fan of all the manual controls which so many Fuji fans rave about. The aperture ring on some lenses, the shutter speed and exposure dials? Meh. Even though the XT10 was touted as having really good focus speed, I found it generally inferior, and some lenses (35 F1.4 and 27 F2.8) were hard to work with. I also tried a Nikon DSLR for awhile. What ? Why? Yes, I previously ditched my DSLR setup because of size and weight. I made the mistake of reading about the Nikon D5500 and some new collapsible lenses. That darn SSE kicked in again. The Nikon body was actually lighter than my EM1. The camera has a touch screen that is fully articulated. While size and weight weren't an issue, I found the whole Nikon experience to be a pretty clunky affair. Live view is poorly implemented. While the newer DX lenses were light and relatively compact, upgrading to better lenses would negate this advantage. My biggest issue with both Fuji and Nikon was the lack of IBIS. When I was in my 20s, 30s, and 40s there was no IBIS. I got along fine. This fall I'll be turning 65, and have reluctantly come to the realization that my hands are not as steady as they used to be. With both Fuji and Nikon, I had no problems using stabilized lenses. However, when using non stabilized primes, it was very uneven. On the one hand, I'm sad that time is taking its toll. On the other hand, I'm grateful that Olympus, and to a lesser extent Panasonic, have implemented IBIS. I really need it. If Fuji ever put IBIS into some of their bodies or offered stabilized primes as well as zooms, I might be tempted again. That probably isn't going to happen.