It was considered possible to make a stop at the Olympus E-M1, which is lavishly acclaimed. I was persuaded by the contrast, so I went with 6000. More megapixels, more matrix, significantly less noise at high ISOs, more comfortable in my hand (the slippery Olympus just wanted to escape from my hands, and this camera is not intended for video shooting at all), the ability to hook lenses through the ring of other manufacturers (including full-frame), and of course, the price is significantly lower!