these be really good headphone . they be not the absolute best that money can buy but they be very good still . the Noise isolation be work well . the bass be pretty deep as long as you have the right ear cushion in . the smaller piece you have in , the better it be , and easier it stay in you ear . overall it be be a good purchase . pro : Audio quality , bass , noise iso . con : price , control talk control do not work on android , earbud be heavy and can fall out when walk .