I have a JBL Charge 2+ which is absolutely superb.....demoed it against basically everything else on the market and I am over the moon with it (and I am reasonably fussy, I have a separates system with mission m35i floor standers, ue triple fi 10s and beyer dt770s). It is also waterproof too. I believe the charge 3 that replaces it is a little less clear due to it being submersible rather than just shower proof thus has more seals, so I'd try and get a charge 2+ for what I imagine would be a bargain price.
It comes with me when I'm working away etc and in reality gets more use than all my other hifi gear these days