I just installed the XM radio in my car and it is so great in every way. I can't believe people that complain about paying $10 a month for radio. First of all, the good channels are commercial free and it tells you exactly what the station plays! The sound quality is amazing and it sounds almost better than my cd's. I bought the XM Direct unit to hook to my Pioneer HU and I am completly satisified. I bet Sirius radio is the same way it just depends on what brand HU you have I guess that's what your stuck with. Anyways, I have not had it cut out at all or even any sign of signal fade or static. I can guarentee you will love it and every car should have one stock from the factory.