Got a pair of the new B&O H5s.
I bring my B&W C5s with me everywhere - great earbuds without being terribly expensive. Problem is, the wire just absolutely sucks. And using them to run is just an awful experience.
These are bluetooth with
no stupid hard plastic battery cover in the middle of the wire. So much better.
Sound is decent. Very good for $250 BT IEMs - better than what I've heard from Beats and Bose. But no, not amazing. But for working out (weights, cardio, sports), I have yet to run into anything better under ~$400.
Bass is a little light. I try to avoid software equalizers - but the B&O app is surprisingly decent. You can artificially boost the bass, and it helps a lot on hip-hop and drum-heavy alternative. Highs are clean. A good bit of the mids blur together, though - hardly zero separation. About as far from "open" as my headphone selection gets.