At this price level, no discussion, you have to expect the very best on the market. Concerning the M-cameras, DxO proofs this isn't fully the case. You buy with Leica a name, a style, an entry ticket for the golf club but all of that is having no meaning to a real photographer. Mechanics & optics are key competences Leica can manage in the most perfect way, but electronics and the according ergonomics are a different story... but unfortunately, in 2013 this makes the camera a winner or a loser. A lot of parts are purchased from and manufactured by others like CMosis, Jenoptik, Olympus... About the lenses there is a lot more to say in terms of IQ, but also here we see Zeiss, Voigtlander,... and be honest, if you compare these M-lenses with the very best you can get in the DSLR and even premium compact-world, you'd be surprised. They are not stupid in Asia, having lens-factories that produce glass at nano-level precision, also compensated designs with complex multiple aspherical lenses. Everyone has to judge for himself, but I'm no Leica-believer anymore, no longer, this M is only half a step forward where Leica had to take at least 3 steps to be on par with truly the best you can get.