Build quality is definitely a concern with the NE-7Ms. My first pair the glue failed after about 4 months, causing both monitors to pull apart. They were replaced very quickly by NuForce. However, the replacement pair started to have issues with the mic and inline control after a few months - I was willing to live with that, but then the left channel dropped out completely (it's a loose connection somewhere inside left monitor). They got daily use on my commute, but weren't subject to particularly rough treatment.
It's a shame, really, I liked the sound signature of the NE-7Ms, but 2 failing in 13months doesn't instill confidence. My ER6i's got less ginger treatment, and they were in fine shape after a year and a half, until a new dog in the house thought they smelled like a treat and ate them.
Ordered a pair of S2m's from Amazon for $30, but still hoping I can work out a resolution with NuForce on the NE-7M's.