I'm not sure the m1 will be lesser quality. For me IQ is no 1 priority and portability no 2. The m1 is identical iq to pro1.
I definitely think there is a tendency fit old photographers to scoff at smaller cameras. Erm, why? I revel in these smaller bodies.
I played with an m240 at the Leica store in Mayfair. It's a tank. I mean erganomically not easy to hold and geavy and huge. ( ok so I'm a bit jealous because I can't afford one)
The face recognition focussing on my x10 was very good. Useful wide open on a f1.4 with a group of peolple