I have tried many pairs of earphones, cheap and expensive, and settled on Philips (and disappointed at Sony). I have used up one pair and acquired a similar model ($35) and been happy with it. I used them for work-outs and during the long flights while I travel. There are only two things. The cord always got in the way and those “ear buds” become slippery when I become sweaty. Nothing worked. I would take them off when the effort to keep them in become frustrating.
When a friend ran for Marathon, I asked which earphones he used. “JayBird,” they are the best. They are BlueTooth, so cordless. And there are those funny shaped soft plastic pieces to secure the earphones to the ears. Somehow, sweaty and running, they stay in.
The sound was clear and crisp, but skipped a beat once in a while. I needed to learn remember to turn them off to conserve battery. Guess wireless comes with a price more than in monetary form.