Andi -
I love my Sirius. Got it via the car dealer. If your car does not have satillite prep then they have a piece of sheet metal they have to install somewhere for the antenna. We researched it because Frank did not have it and we were going to put it in his car. A good reason for a new car (ha ha ha) They told us about it. Also installing it non-dealer can void a new car's warranty - you might look into that.
I got in in my car and Frank just got it in his car that's on order. Have channels for various groups, like all Rolling Stones, All 70's, 60's etc. All Big Band, All Broadway. Lots of Talk. You can subscribe by the year. I got a lifetime subscription for $500.00. If I get a new car, I can just transfer it to the new car. I can also use the same subscription for a second device.
You can check out the channels online and listen for free for three days.
www.sirius.com