I have been considering the Kenwood KSC-SW1 (
http://www.crutchfield.com/S-beJu64CMegu/cgi-bin/ProdView.asp?g=51000&I=113KSCSW1&id=review) for an upgrade to my "hi-fi" system. Seems simple to install, is unobtrusive, and cost-effective. Does anyone have any experience with this one? If not, I will report back with my findings. There seem to be no permenant mods. Meaning, I can remove and sell this thing, or move it to a new car if I sell this box.