I bought these years ago and they work great every time. Nothing beats Bose sound quality. Sometimes the module is annoying and gets in the way (also makes it hard to put your phone in your pocket with the module) so I would say if that part could be improved, that would be great. I love this for airline travel for the noise reduction and they stay in fairly well while jogging (I do wear a buff though). I'm impressed with the battery life for the noise cancelling.