I have had a Panasonic G5 mirrorless for about three years, together with five lenses. It can take very good pictures when I actually have an excuse to take it out with me. Though as most of my trips out are to Tesco that isn't very often, so when I am using it I have to spend 30 minutes remembering how to use it to best effect.
Notwithstanding that I am waiting for the new
Panasonic GX8 to come down in price a little.
That has in-body stabilisation which works together with the stabilisation built into their lenses, so should be an improvement.
I mainly use my mobile to take snaps and also use my Sony travelzoom which is much easier to carry about. The travelzoom is all I need really but I get urges to buy new tech despite not needing it.
Wiki has a good article comparing micro 4/3 systems to DSLRs -
Micro Four Thirds system - Wikipedia, the free encyclopedia