I have seen both products and happen to like SIRI much better. Less commercials on SIRI. Even comparing the two, One is not much better than the other. And lets face it XMSR isn't going to be the only Satelitte Radio provider. If it were, it would be a monopoly and would have anti-trust all over it. So, if you think Satelitte Radio is going to be the next best thing, I suggest you buy some SIRI and XMSR.