Cannot tell for the Canon, nor for the M2, but I own two M3 and they are of so superb craftmanship, that I cannot believe somebody can make it better...
I was buying new glasses for me, just a year ago or so, and in this optician shop, they had a new MP lying around. After I bought the glasses, I just ask, if I could have a look at the Leica MP.
Well, what can I say? I was a little bit disappointed. The finish wasn't nearly that good as on my M3's. Just have a look at the brightline finder lever! I thought it is the same, but in fact, it isn't!
At the old stuff, you feel and see, that really every single screw is hand polished. Look at the body! Every edge is hand polished, every single unit is different!
On the new MP, I had the feeling, that it is just machine made with harder edges, etc. 😱 No feeling for the 110%. Finished without love.
Also: Look at the engravings! The old ones are sooo incredible well made. I have a new Leica shade for a 90mm lens. The engravings are just a little piece of sh*t. I will sell this shade, because of the poor engravings.
Also, I read before, that the shutter mechanism is much smoother at the new MP.
For me, it was like the same, compared to my CLA'd M3. No big difference.
With the Leica cameras of the 50s and 60s it is the same as with old audio Hifi gear. In these times, costs did not matter. It was like a competition between the companies, who is going to built the best!
Yesterday i could not resist and bought an M2 for less than 300€. Cannot wait to be arrived!!!😀