My biggest peeve of the EOS-M is the damn touch-shutter button. This option should really be enabled in menu only, not on the main screen. I constantly have to turn it off because it always ends up on, taking random pictures. The only work-around is hitting the info button until no information is displayed on the rear screen. I just use that now to avoid that issue.
That is my only problem, though. All else is great with the camera.