Got it in the ride---Pioneer XM behind a killer JL setup
Ditto in the pad--- SKYFi attached to my class A surround system
Got the boombox add on---for tunes on the beach, in the rent-a-car, hotel etc SKYFi plugs into it...
Digital satellite with 100+ channels, 10$ monthly with a family plan so add-ons are 6$ a month---ive NEVER had the ability to listen to so diverse a selection of music instantly in my life---im listening to music ive NEVER been able to---every type of music you can imagine with special programming on a regular basis emailed to you---it isnt 100% commercial free XM does have 30 channels that are tho---they play 6 mins of commercials per hour on "some" channels although ive only heard 1 in 3 months---
Sirius is its counterpart offering similar service with a few different features including equipment manufacturers---
You can check XM out here
http://www.xmradio.com/index.jsp and listen to some streams on the left side of the page---
Look at Sirius here
http://www.sirius.com/
Add-on systems can be had cheaply for a car unit you already have (Roady or XM Commander) and home units are available so you can use a system both in the car and home on 1 subscription---
There are fansites with forums etc so you can really check it out from the users standpoint---
Here is the XM site
http://www.xmfan.com/
Have a look---ive really been surprised at my level of satisfaction...