I use the J&M Blutooth. Interface works great but they need to clean up switches. Originally started out with one rocker type switch for wired unit. Now still have to use rocker switch (to mute stereo) plus use "multi-purpose switch" on blue tooth reciever to initiate outgoing calls. I didn't want another switch on top of the bike so I just buried it under my fairing and set my phone to auto answer and use rocker when phone rings. To dial out I hit the voice dial on phone to activate the blue tooth for outgoing calls. It would be nice if the rocker switch and blue tooth unit were integrated. Phone hangs up when the other party disconects.