I have had just about enough of XM. They seem extremely liberal to me. Just a day or two ago I tried to listen to their "POTUS 08" station, and found it so slanted to the left that it was unlistenable.
I am very close to cancelling the subcription on all three of my XM radios.
I'm pretty close myself. Sounds like they may become obsolete anyway (in that we will have to buy a Sirius compatible radio).