Only choice you have is Sirius/XM. The big choices are in the receivers. Some of them qualify for the cheaper Ala Carte subscription, some don't.
I recommend a receiver that can be moved from dock to dock. We have a StarMate5 which sits in a dock in the truck and moves to a dock in the fiver when we are stationary. Not as big an issue with a class A, but you could use the portable receiver in a car as well.
'99 Volvo VNL610 - 425 HP Volvo; Super 10 Spd
'13 smart CityFlame on Volvo
'05 Newmar Mountain Aire 35 BLKS
Trailer Saver; Bigfoot; Pressure-Pro.
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