Just got the 660 and clear earjels (free from verizon). I love it! Best BT ever. Prior to this setup I had the BlueTrek G2 and the Scala 500. Both were decent but the sound quailty on the 660 is unmatched (especially outside or in the BMer witht the windows down). Also, the fit is absolutely perfect with the eargel minus the earhook. The 660 seems to pickup calls in less than 2 seconds (both in/out). No static inside of 20-25ft. Well worth the $72 w/s&h!!!!