[Klaus]

The build quality of the EOS M line bodies is very high. Tight tolerances, sturdy metal feel, scratch resistant glass over the LCD. It is the one standout feature of the EOS M series.

The lens build quality is pretty good (11-22mm, 22mm, 18-55mm), a notch above that of most EF-S lenses.

 

The build quality isn't bad but certainly not pro grade - it's in the xxxD class I'd say. Metal parts aren't everything.

The front and rear dials feel average for instance. The (plastic) battery cover feels a little cheap.

Now this has to be seen in the context of its pricing, of course. Say an Olympus E-M5 II or a Fuji X-E2 feel sturdier but they are also more expensive.

I am most surprised about the shutter - could be a Sony one (in terms of noise and vibrations).

In terms of ergonomics I'm not thrilled but there is no showstopper. This is odd because the ergonomics on Canon DSLRs is the best there is in the DSLR league (IMHO). Probably still an upgrade compared to the original M. ;-)

I agree regarding the 18-55mm.

The 55-200mm has a plastic mount (and more plastic in the body) though which is insulting regarding its price tag.

Can't comment on the 22mm yet.