I'm big on Sirius. Love it. Mercer Boy got me hooked.
The car kits cost about $70. I tried to install it myself, it worked but it was messy so my dealership installed it for $50. It is suctioned to the inside of the windshield so it's not as convenient or as nice looking as the ones installed in the dash but it works fine.
The Home kits are pretty easy to install but you have to make sure that you have a window facing Iowa-ish or you won't be able to get a signal. If you live in a big city they will have a terrestrial rebroadcaster so you will be able to get a signal from almost anywhere.
As I said, I love Sirius but I'm a big Howard Stern fan. The NFL is also very good but only if you are on the road on Sunday.
"I think that gay marriage should be something between a man and a woman" Governor Arnold Schwarzenegger