I've always liked this camera. Especially after the firmware upgrade. Always wanted to buy one.
But the lack of quality lenses for it stops me every time. I would only consider the 18-55mm. But that lens is only f3.5. MINIMUM would have to be f2.8. Adding an adapter for a better lens takes away it's size and cost attractiveness. At that point, buy an SL1 instead. Unless Canon comes out with an M2 in the United States, the 'M' is a dead-end product.
Pity. My favorite lenses for the system are the 22 and the 11-22.
The dealbreaker for me about the SL1 is the lack of AFMA. To take advantange of fast glass, it needs AFMA. Sure, you can use slower lenses, but then it's not much over the EF-M's 18-55...