[Dongle]

I want great quality sound in an IEM that"ll take some movement. I used to have a Bose IE2 but returned it because it wouldn't seal enough to make great bass.

Got a Sennheiser CX 680, but it was too harsh and lacked bass.

Any gems out there I'm not aware of? Thanks.

 

[jgray91]

You could try and look for one of the new Sony IEMs, the one that has an earloop, called the S65 or something. There's a newer model that's even swimming proof, but I think those are still Japan-only.

 

[Dongle]

I tried a Sony sport IEM a few years back; a plastic cable linked the earpieces behind the head. It was uncomfortable and never sealed properly. Not a fan of Sony

 

[jekostas]

You could probably look at something from H20 audio.  They're designed to be waterproof.
 
There are a couple of models reviewed in joker's giant reviews thread.