interesting topic, yeah, I got Sirius radio too and i like it, the biggest selling point being that there is no commercial. In addition, they DO play songs that terrestrial radio doesn't play, or sometimes, play songs weeks before terrestrial radio plays it. I'm don't regret paying 12.99 each month.
but to be fair to mluu510, eventhough I listen to Sirius 90% of the time, on my morning commute, I sometime tune to a local radio station cuz the morning personalities on this one station are pretty hilarious. So I listen to FM like... just once a day, but sirius most of the other time...
oh yeah, another plus for Sirius is that you get to listen to music no matter where your at (not in a cave or in a tunnel or anything like that though l

) but for someone that travel a lot, it's hella useful.. I mean, i've traveled to a lot of places with my car, and everywhere, I can rely on having a good station to listen too.... so anyways... back to topic
Unless it's free, NO, don't get HD radio... come on, if it's just for talk radio in the morning (like in my case) that FM quality is good enough. Go to sattelite radio for good quality music.