XM is what we have in the car. We really like it. No good radio stations here in the Detroit area. Plus I do long rides. I have an mp3 player that is plugged into the cassette jack inside the fairing. But, I would like more variety of music. Not just what is on the mp3 player. I listen to some pretty hard stuff, Liquid Metal, Lithium, etc. But I also like the 50' and even the 40's, so XM would be good. I just was not sure if you had to have the antenna out in the open or if I could mount it inside the fairing.