I had similar issues with the ER4s I used to have, so I'm seriously considering (and probably leaning toward) switching away from Etymotic, unfortunately.
But yeah, the sound of these are really great. Maybe they didn't quite measure up to the ER4 on sound quality but from my memory of a few years back, the bass on the hf-series is a touch stronger, and the microphonics were drastically improved.
Who knows, maybe I'll be right back using them in a few months though.

















