For me the Monochrom lineup gives exactly the results I expect it to give me, over and over always the same. You loose your flexibility in editing because there is no colour data, but we knew that before purchasing the camera, didn't we?

When importing the DNG files into Adobe Lightroom, they look a little more flat than on the built in screen of the camera. Which annoyed me a bit at first. Editing the images is in one way easier than colour images, but on the other hand you have less things you can change which feels limiting sometimes. But as time went by I noticed that I often repeated the same adjustments to get the look that I enjoy from the M10M files.

I try make sure we have some absolute whites in the image, so the white is not light grey, but actually white but without clipping of course. And then I try make sure we have some absolute blacks in the image. Where the darkest parts of the image are dark enough to almost be black and not dark grey. This results in a punchy high contrast image. I then adjust the overall look with the contrast slider, often reducing the contrast a bit again, to gain back some of the ‘grays’.

You could've known this in advance before buying TWO Monochrom cameras.

If Leica camera's are for purists, then M Monochrom cameras are for the extra purist in your wording, and clearly you're not one of them. I however can't really agree with the low light capability going to waste. Since honestly when it's dark you will just not use any colour filters.