not bad if based on Amazon recent 2 months reviews.
For this price point $690, you get 2 good lenses, a small flash with wireless master function and a solid body.
Picture from EOS M - Page 13
I think if you buy an interchangeable lens camera system, you should buy one that will perform well to justify the higher price.
The Canon and Nikon mirrorless systems are both less than ideal choices to put it politely. I would not say they are crap, but they are definitely inferior to the options from Sony, Olympus and Panasonic.
The Canon EOS M is known for poor performance, while the Nikon bafflingly uses small sensors. Perhaps being stalwarts of the SLR/DSLR industry has constrained their ability to think out of the box for a fresh approach in a new camera category.
For now, I don't suggest a mirrorless system from Canon or Nikon.
PS: There are also several good options from Panasonic and Olympus that are in the similar price/performance bracket as the NEX-3N
PPS : Panasonic recently announced the GX7 which looks like it will be a blockbuster on par with the Olympus OM-D and the Sony NEX-6. These are high end cameras though.