What is the Leica equivilent of a Canon EOS 40D?
Nothing. Their new one (not out yet) probably costs a ton of money. Their R9 which (had) a digital back costs $5,000 alone for the digital back. M8 isn’t anything like 40D. Of course, if you want to look good with one, the good old fashion M film camera like this will get a lot of attention http://www.cameraquest.com/m6thgold.