In reply to glenn0010:
I've just acquired Olympus E-M10 mk III secondhand from Park Cameras. That has an Olympus M.Zuiko Digital ED 14-42mm 1:3.5-5.6 with which I am impressed, to the extent of being surprised by what it can do. It gets a bit fatter when you put a filter on the front to protect the lens which is otherwise very exposed.
The biggest problem is finding a case that fits snugly - I have an old CCS case which is 'rucksack compatible' but that is rather too roomy. The camera goes climbing - wrapped up in a tenba 12 inch wrap, which is a bit marginal frankly. Both together fit nicely in the CCS case.
To be fair, I've not got much to compare it to - the old Panasonc Lumix that it replaced and an equally ancient Pentax K10 which is built like a cornerstone of the Bank of England.