SATELLITE RADIO HOW DO I CHOOSE BETWEEN SIRIUS OR XM ? I'VE NARROWED IT DOWN TO SPORTS PREFERENCE. IF U LIKE FOOTBALL CHOOSE SIRIUS. IF U LIKE BASEBALL / NASCAR CHOOSE XM. MUSIC SELECTION IS PRETTY MUCH EQUAL. FOR LIST OF CHANNELS CLICK ON THE LOGOS ABOVE. XM COMMANDER XM COMMANDER VERY LOW PROFILE (4" X 2" X 1") PROFESIONALLY INSTALLED CUSTOM FEEL & LOOK TO YOUR DASH COMPATABLE TO ANY CAR STEREO         $149.+LABOR   STARBASE (SIRIUS) VERY LOW PROFILE (4" X 2" X 1") PROFESIONALLY INSTALLED CUSTOM FEEL & LOOK TO YOUR DASH COMPATABLE TO ANY CAR STEREO $169.+LABOR DID YOU BUY YOUR SATELLITE RADIO ON LINE OR A RETAIL STORE ? NO PROBLEM ! WE CAN INSTALL IT PROPERLY TO YOUR VEHICLE WITH A NICE CLEAN LOOK.(HARD WIRE) NO LOOSE WIRES AND U DON'T GIVE UP YOUR CIGARETTE LIGHTER PLUG. ALL ANTENNAS ARE MOUNTED ON ROOF TOPS (NO DRILLING) FOR FULL RECEPTION.