Here are my thoughts on design/build. These came nicely packaged, accessories; all that jazz you read in the review. The mostly metal construction is sturdy but the angled stem (metal strain relief) design creates (IMO) an unnecessary stress point. In all my years of owning IEMs, I have stepped on mine more than once (stumbling around in my room). Do the same at the wrong angle with the CX 985, and you're likely to break it.
[To be fair, stepping on IEMs does not constitute "careful" IEM use, but I'm here to report from my personal end user perspective.]
Moving on, all the metal used on this IEM is good for aesthetics, but a little functionally misguided. The housing is metal, the plug is metal (all okay at this point), but the aforementioned strain relief is also metal. (Why?) I'll just refer to it as the metal stem since I don't know what to call it. Sure it has a great feel, but it creates unnecessary weight/drag in the wrong direction. This drag doesn't actually pull the IEMs out out of your ears, the weight is too miniscule for that, but it constantly "coaxes" it in that direction, and given the slightest tug they do come out. I would be willing to look this design choice over IF the IEM sat inside the cavum of the ear like the UM3X, RE262, or SM3 do. These do not. They sit in the ear solely based on the tension the tip creates against the ear's auditory canal, so subtleties like this have mattered.
Moving on to the sound, these are decently balanced with an adequate amount of detail retrieval, pretty smooth. Some frequency anomalies were detected, at times the bass would be a bit too prominent, once in a while a little hot up top. Over all not a bad listen, but nothing to get too excited over. With respect to design & future IEMs, sometimes less is more and sometimes more is less. Anyway, thanks for the opportunity to listen to these.