My wonderful wife got me the following for Christmas today: Kenwood KTC-H2A1 tuner, KPA-H2C car docking kit and the KPA-H2H home docking kit. I have been dying to try satellite radio. However, I have concerns about the sound quality. I will use sat radio primarily for my car. I currently have an Alpine CDM-7872 running thru amplifiers with component speakers and a subwoofer in the trunk. I like my music. Since I don't have a cassette player and my HU doesn't have RCA inputs, I must go buy a FM modulator correct? Will I be happy with the quality of the sound thru a modulator? My other option is to take everything back and upgrade my HU. Here is where my sat radio ignorance begins. Help me answer the following: Do I have any other options with my current setup? If I buy a new HU that is sat radio ready, do I still need to buy a sat radio tuner? If I buy a new HU that is say XM ready, can't I just hook up a Sirius tuner thru the RCA imputs anyway. If I really like the Alpine HU (XM), but want Sirius, or vice versa, why aren't the two compatable? If I want to use sat radio in my house, I assume that I connect the docking station to a boom box or receiver via the RCA connections. What is the advantage of buying a $200 home unit vs the docking station? Thanks for any help you can give to educate me.