The Canon EOS M delivers on the image quality front, but is otherwise ultimately a let down. It's late to the compact system camera game and fails to offer anything truly special.
Image quality is DSLR-matching; EF-S lens adapter accessory available; flash included; fully manual movie mode with great results
Too pricey; autofocus system slower than the competition; battery life limitations; touchscreen has to be used to find certain settings/modes; no electronic viewfinder possible; limited EF-M lens options; flash not built-in