the signals come from satellites...over 100 channels, I guess its just the radio equivalent of satellite tv. I'm probably going to go with the boom box unit, for portability around the house.
subscription is like $10 a month.
"...including many commercial-free channels. XM's radios for the car and home offer you freedom - from static, from distortion, from that frustrating feeling when you drive out of range in the middle of an exclusive interview or a new song you've been waiting to hear." http://www.xmradio.com
that's the thing. the few people I know who have it love it; it would be nice to have for variety, especially due to the myopic nature of Columbus media during football season.