I'm looking for a very durable pair of IEM's to use while working out. I need something that will stand up to weight training and cardio workouts. I mostly listen to rock or rap / hip-hop while I workout. Mostly I'm concerned with a sturdy cable that can stand up to the punishment of the workouts as well as being shoved into my gym bag, and a nice secure fit in my ears, and good isolation to keep out the sounds going on around me. And of course it would be nice if they worked well with those music types previously listed.