I dont have the S20 but I have the Sena SMH5-FM. The radio works well, I can get the same radio station from Orlando to St. Augustine and back if I want. It works well with my MP3 Player, and phone also. I ride solo so I dont have experience with the intercom or with other bikes, but for personal use I love it. I am thinking of getting the S20 next year just as an upgrade though. Also, I use a modular full face helmet that helps with the wind noise.