I realize I haven't written a review for these yet and I've had them since Jan 2016.
I personally really like the sound of these. They have good bass, and if you blast the headphones, you won't get ear-piercing highs. I don't know how else to describe the sound. They don't have much of a sound stage at all, if you really care that much about sound, but most people haven't even experienced what that sounds like.
I haven't had any issues with the build of the headphones. I wasn't babying them since they were only $40, but I have a new-found appreciation for them and have been taking special care of them (mostly where I store them). I use them daily and I travel around town a lot so they've been used a lot without issues.
They're currently outperforming my new LZ-A3S IEMs when plugged into my computer/phone. Those IEMs are $140 on massdrop, almost $200 on amazon... However, IEMs are supposed to be paired with a proper DAC &/or AMP &/or DAP to shine. But that means more money on top of the $140 DEAL to get them to beat a pair of $40 headphones...
For $40 CAD, I would recommend these if you want budget pair of great sounding in-ear headphones that you can use for several months to years without getting tired of them until you want an upgrade.