I’m a subscriber of XM Radio, the competitor to Sirius radio.
As I understand things, XM Radio has the better technology, while Sirius has the better programming; that is, the music is put into specially categorized “buckets”, where as on XM Radio all the channels sound pretty much the same.
Anyhow, I just realized that XM Radio allows you to play XM content online. That’s a big plus for me, as my only receiver is usually at home or in the car with the wife.
I wouldn’t be surprised if someone told me Sirius did the same thing, but at the moment, I can’t even get their home page to load.