LG VX-8600 / AX-8600

Has anyone used the bluetooth headphones. If so how did you like them? I want to make sure they are worth the money before I buy them. I went to buy them at the VZW store. The salesman told me that they are not returnable, when I asked about the worry free guarantee he said it does not apply. If they malfunction they will replace but he said that they will not allow you to return.