Blueridge, I just did some research on the 20s and it seems that using that unit, you can do all I can do using my system. I did not realize that the 20 s has a built in fm receiver that I could listen to my beloved sox. I use the navigation from the bike so I would still need to have the sm10 but if I had a stand alone unit that was bluetooth compatible, I could pair it to the Sena 20s unit. I am thinking now of getting a single 20s for my wife and/or daughter, who ever is on the back, so they can listen to the radio instead of their playlist, and I can listen to mine through the smh 10. Then I could take the other communicator and charge one while using the other if out for a long ride. I am guessing because both units are from Sena there should be no problem pairing them together so we can communicate also.