I have XM w/ the best of Sirius(you can get Sirius w/ the best of XM too). Depends on what you like to listen to. With the exception of a couple of channels, XM has the best music selection(of all genres) .honestly, the only reason I wanted Sirius was for the NFL broadcast, but I bought the lifetime package. So I don't care.
"WHEN you're thinking of replacing a blown fuse with a higher rated fuse ask yourself if you know more than the engineer who designed the equipment."