Since XM is satellite ... does it suffer from the same reception problems home satellite (TV) recievers do? I know I had DirectTV and it honesty went out everytime it rained and sometimes with just cloud cover. How do buildings and hills affect it as well? I would never want to go through that problem again. This would definately help me decide to NOT get it, otherwise it will be whether I want to waste money on the installation to have it integrated with the car. Thank you