I have been using&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Logitech-FreePulse-Wireless-Headphones-Headphones-behind-the-neck-wireless-Bluetooth-2-0-EDR-black/dp/B000KKKQ0O/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Logitech FreePulse Wireless Headphones - Headphones ( behind-the-neck ) - wireless - Bluetooth 2.0 EDR - black</a>&nbsp;for several years, and recently I bought an&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Insignia-NS-2V17-Sport-2GB-Video-Bluetooth-MP3-Player/dp/B001L47PE8/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Insignia NS-2V17 Sport 2GB Video Bluetooth MP3 Player</a>&nbsp;to use with them since the adapter that plugs into non-bluetooth mp3 players had broken. I was pleasantly surprised with the quality of the new MP3 player, so I decided to buy these headphones, and I have been pleasantly surprised with them. They are more comfortable to wear than the Logitechs, and they seem to sound better as well, at least with the books on tape I usually listen to. I love having play/pause and back/forward controls on the headphones so I can leave the MP3 player in my pocket.