Leica M 240 vs 5D III vs Nikon D800

[mirekti]

After shooting and being obsessed with photography for two years I somehow settled with a 35mm f/1.4 on my dslr. It's 90% time on my camera for last few months.
Now as M 240 is about to be released I started to wonder should I sell all my equipment and settle with Leica and 35mm 1.4 lux. I like the idea of having EVF on it as composing through viewfinder is a bit tricky I heard.
Maybe in future I'd get some other lens as well, but for now 35mm is what gives me joy and I'm certain this would be enough for me. The size and weight are also a big plus for me to go in that direction.

Could owners of both systems share some thought about IQ, sharpness, colors... comparing Leica (I presume IQ of M240 will be very similar if not better than M9) and one of the mentioned DSLRs?

What are your predictions about other brands?
Will they go in that direction too?
I read Zeiss lenses are quality wise quite close to Leica and maybe there will be some other FF rangefinder style cameras for much less money.

[EchoLocation]

Have you considered the Sony RX1? I'm really impressed with it's performace and if you like 35mm, it's perfect. It's low light is outstanding, and the lens was just rated as one of the sharpest lenses on any camera system(forget where i read that a few days ago.)
You can probably pick one up for around 2500 bucks these days if you look around.