[DarthKarl]

I love XM nearly as much as I do the H3.

I'd never had it (or Sirius) before, but once I tried it I was hooked. I like to listen to a lot of different music styles and with satellite radio you have so many options. Out in our neck of the woods there just isn't much variety on FM/AM stations. The other great thing is that you can listen to CNN, Fox news and the Weather Channel while you are driving.

For long road trips it is mandatory equipment. My wife at 1st thought it was a bit of a waste of money, but an XM radio (for her car) went on her Xmas list after having listened to satellite radio.

As far as a comparison between XM and Sirius, I can't say which is better. I went with XM simply because it was OEM equipment offered by Hummer.