Hello FT. Does anyone on the forum take a Sirius satellite radio with them on frequent trips?

I am very interested in getting a Sirius radio so that when I am traveling around the U.S. I can still listen to the Packers, Badgers and Nascar.

Company policy requires that I rent a compact and so I rarely get Sirius included with the rental car.

Is there a radio that:
>travels well in luggage?
>is small?
>easy to move from car to car?
>gets good reception?

Thanks for your thoughts.