Im using Sennheiser cx 350 II. Really good build quality, Bass could have been better so I dont know if it would suit your need.
But last time I was in pakistan which was a couple of months ago, I bought a pair of Beats In Ear copies, and they were really good. And I mean really good. I have a pair of orignals to and the sound quality was preitty much the same. Build quality, not so much but Im sure if u treat them nicely they will last. Those copies only cost me like 3200 rupee. They were other avalible to everything from 500-5000 for the in ear models but those I bought were the best. Got them from a computer shop in Hafeez center Lahore.