I have a '06 NON-Bose and right now am running a Kenwood Sirius unit hooked to the stock head unit though the antenna adapter.
Needless to say, it sounds pretty bad.
I would like to upgrade the head unit to something that pulls in the sirius directly, then upgrade the speakers a bit.
BUT is the Sirius the week link sound quality wise? I'm pretty much set on staying with sat. radio, but would like to make it sound as good as is possible w/in its limitations.