XM Satellite Radio Review

We travel by road quite frequently and XM iSatellite Radio ss always with us.  We have our favorite channels and never miss out on news or have a variety of comedy or music to choose from as well.  It's very cost effective, but we're finding a lot of the channels are sneaking in commercials and this is what we thought we were paying for - commercial free radio.  The only downside is when you pass a stand of tall trees you lose reception.  Now, that's funny considering if you go under a bridge you DON'T lose reception - go figure!