Sirius noob here. Got a subscription to use the Sirius radio in a rental car, and now I want to do my own thing. I'd like a radio that can work both in my house and car. Even a desktop model (like the Tivoli) is fine; I can park it on the front seat. What's the best combination of receiver + antenna + output device that I can move between home and vehicle? I already have a Tivoli PAL radio (rechargeable, woot woot!) with an input jack; is it best to buy something that I can plug into it? Thanks in advance.