qarkyI'm using the Xiaomi Piston 3 atm. Sound is nearly on par with my Hifiman RE-400 and the mic sounds good. I've also used the Shure SE-215 but the bass was a bit too much. I'd recommend checking out the Etymotic Hf5 but don't think they have a mic.
I second this, I have owned 2 pairs of SE215's- great earbuds and great quality from a reliable company.