Steve Huff, a small camera specialist, does a quick review of four camreas.... The Nikon DF, the Sony A7r, the Olympus E-M1 and the Leica 240. All of these cameras in my opinion could have been picked though the Leica is out of my league price wise and I suspect yours too.
Interesting in that Steve spend almost 1/2 the time talking about the DF. Looks like a neat camera. Certainly the best low light performer out there, according to the review.
One nice thing about Steve Huff is that he actually uses these cameras, for weeks... He just doesn't pick one up for a few days... He lives with them. So I give more credit to his opinions then most.