I like the camera but find changing settings difficult. Yesterday I had it out and wanted to take a custom white balance. First had to change to manual focus (buried in a menu and had to use touch), take the shot with the WB filter on, then turn AF back on, then find the Set Custom WB setting, then navigate to Use Custom WB setting. Frustrating and took far too long. Whereas on my 5D I can get it done in about 5 or 10 seconds and it's an intuitive process. Also the lack of a viewfinder makes it difficult to see many shots.
But the size, versatility and IQ combination can't be beat.