Making up my wish list of add-ons if I buy the '16 RTL; trying to understand the entertainment/comm system. I figure the AM/FM Entertainment system integrates the Garmin 660 GPS, albeit through the speaker system. Like my old Stratoliner, I plan on linking my Droid phone (connected to trunk 12v power) to the Bluetooth on the Garmin 660 GPS and link my I-Pod (music) to the Apple connector in the trunk. I would also like to get the Sena 20s Helmet Comms so rider and passenger can have intercom and listen to everything, i.e., AM/FM or I-Pod music, and GPS info. The salesman stated I do not need the Sena SM10 Dongle since I have the Garmin GPS and its Bluetooth. Comments?