I have had the M since it 1st came out. I carry mostly backpacking. I finally got around to ordering the 11-22 lens (had to order from Canada, funny, interesting thing was it came with a Canada/USA warranty).
The attached is at the 11mm end with a polarizer. No post processing was done, other than converting from RAW to JPG.
I am happy with the M, but would not suggest it for action shots.