Thanks, FL
On the subject of "which radio", I agree that the computer-interface ones are very clever, but expensive.
I've heard several Yupiteru owners speak happily of their radios.
What you might find frustrating is listening on a portable, when you can only hear one side of the conversation (usually the aircraft). If you listen only to your local airfield, that won't be an issue, but if you start listening to stations further afield, you may then be wanting a better antenna.