Seeing that bas a## ride of yours around this board makes me think this might just be the only time that I could answer a question that you have, so I jumped on it! Right now, I think that XM radio is the only provider actually up and running. There is supposed to be another provider going live this summer, but we'll see. As far as equipment, when I looked, it seemed that Sony and Pioneer were a little ahead of everyone else when it came to true XM radio systems (built in - which there are not many to date) and the add on box. Good luck!