i like them, i use them with my samsung omnia at the gym to listen to my music and they sound great.  the bad was that they hurt my head for a while but after a break in periond they fit just fine.  not so with the samsung sbh700&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Samsung-SBH700-Bluetooth-Stereo-Headset/dp/B001EJJMAA/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Samsung SBH700 Bluetooth Stereo Headset</a>&nbsp;i bought, they were too small and i never was able to keep them in my ears but one size does fit all as is the case with samsung products.  i am getting another pair of the 500's to act as a backup for many hours of listening.