Ive got XM. The thing I like about it is the tuner I have has the FM modulator. That means set your radio a set dial ( there are options ) and plug it in to your cig. lighter and whala! It displays song,station, and / or artist. Plus, I can switch trucks in under 1 minute and go. It also came with a "home kit". I dont really get into the whole political... well howard stern is going to sirius and opie and anthony are on XM. I bought it for the music. Its WELL worth the $$$. I dont know but sirius might have the FM modulator type tuner as well.