:yesnod: What year is your Mazda6? I have XM and Sirius in difference vehicles. Since I primarily listen to music (60s & 70s) it doesn't matter who provides the service. If you have a 2005-2007, factory Sirius would be the most cost effective, easiest, and you'll retain the factory steering wheel controls. If you go with an aftermarket radio, you'll need a Metra dash kit, is it now available for the 2007? If you still want XM, consider an aftermarket satellite add-on kit until a factory style XM kit is available for the the Mazda6. They're cheap, super easy to install, and you'll retain the use of your steering wheel controls other than channel selection. I switched from XM to Sirius at work so I could listen to Howard Stern. I quickly realized his show SUCKED. I quit listening to the show before my Sirius receiver was struck by lightening. I quickly went back to XM.