When I had a GW I used the cable to my helmet and to wifes.I didn't realize how poor that was till I got Spyder RT.Now we both have the Sena system sold thru Motorcycle Dave who is a vendor here.He knows what youll need and has good prices and tech help if you need it.I can hear it loud at any speed,talk to wife or others nearby,take phone calls and it sounds as good as a landline(I am using a modular helmet so that is kinda quiet),I stream from my iPhone,amazon music,stuff that I downloaded and also Sirius digital version,also can use Siri,Waze,Google maps and Garmin Zumo that came with bike.The music quality is not concert quality but it is pretty good,no static or wind noise but again modular helmet helps.Figure on spending about an hour to do easy install on each helmet.BTW they say battery life is about 14 hrs and I think that is about right bc I have driven all day and never come close to running battery down.Sena does have FM built in.