When I'm out for a run, I'm not looking for studio-quality sound that would satiate my inner audiophile. I just want sound with plenty of lows and highs, but with enough mids that I don't miss anything (after all, vocals live in the midrange). I also need a pair of earbuds that won't be destroyed by my xenomorphic sweat, which means I have to use either bone-conducting or open-ear headphones.