I try use these headphone after see they have good review at CNet . I agree that the sound be great , I just could not seem to get they to stay in my ear . I try change the bud size but to no avail , they keep fall out during workout . also , I keep feel like I have a vacuum lock in one ear and it affect the sound . this could be a isolate issue for I . I return they . Wish they would have fit better .