This is interesting. Sirius and XM each list their exclusive programming on their sites.

http://www.sirius.com/servlet/ContentServer?pagename=Sirius/CachedPage&c=Page&cid=1065475754125

http://www.xmradio.com/learn/programming.jsp

Why, by the way, does XM have 40 more channels than Sirius?

because the weather channels sirius has 2 different citys on one channel xm has one

xm really does seem horrible compared to sirius...like even if howard was on xm i still probably wouldve went with sirius.....

A lot of XM's talk is rebroadcast terrestrial garbage. Most of which is from Clear Channel.

This comparison is changing with the two Fox channels returning and other additions. But I do wish Sirius had Air America, MSNBC and a folk music channel.