Yeah I don't understand satellite radio yet. I actually think XM and Sirius are tied together now. Not sure. But I got satellite as a free trial when I got my new car and loved it enough to keep it.
The two companies are merged together now. I'll be forever indebted to XM for introducing me to Lucero, on their iteration of the alt-country channel, X-Country.
They used to have a Saturday night show called "Smokestack" hosted by the guys in Blackfoot, featuring 4 hours of southern rock stuff. I heard Nights Like These and was hooked.
Since the merger, that show and X-Country has gone away, replaced now by a very mouthy Mojo Nixon and an underwhelming alt-country channel