I ride with a 3/4 helmet using a sena SMH5-UNIV (low cost, shorter com range. 400m?). I bought a dual pack and use it to com with my girl on the back and switch to shared music. Works great, 7-8 hr battery life. Noting that it is true, over 60mph it does become more difficult to hear your own voice and so I began speaking louder... which just blows out the gain on the other person. Speaking normal even at higher speeds will pick up your voice just fine with the boom mic cover. Riding a 2006VTX1300R with 2up windshield.