I have xm on two cars with no reception problems, (Honda, Lexus). I have had horrible reception problems with the Sirius unit on my 2011 Edge. Dealer supposedly updated software this week, but the radio still cuts out. I live in So Cal and took the car on road trip to Washington. Reception was horrible in Washington, especially around tree-lined streets/area. This leads me to believe that though Sirius/xm are the same company, the satellite platforms are different, (as our therebilling platforms) and xm is a more robust transmission process. But poor reception is still is annoying, especially paying $144.00 a year for the privelege.