Wow, for those who don't notice a SQ difference between sat radio and pandora....
I just got done upgrading the sound system in my truck. I've got a pioneer deck that will run the ipod off of usb, my iphone via bluetooth, my xm radio via an aux in, fm radio, and cd. I've got component speakers in the doors getting about 100w per channel, and two 10s under the back seat getting 375w each. The system sounds much much better than a factory system, but was done on a poor-man's budget (less than $500 invested, lots of CL and used parts)
I would rank the SQ in the following order: CD, ipod, mp3cd, pandora over bluetooth, fm radio, xm, am radio. XM sounds like complete arse, really. However, I live in the desert and will frequenly have long drives with no radio stations at all and no cell coverage, so no streaming pandora. Same goes for on the lake, which is the reason to have xm.
But truly, the sq on xm is way worse than a decent fm station.