Wow, a lot of good info here. I realize listening preferences are totally subjective but you can still get a good general idea of the overall qualities of both Sirius and XM.
Based on the comments posted, I am leaning towards Sirius. I have the XM stations on my Directv and I have been underwhelmed.
I just installed the Alpine W200 head unit,
he said head, which I love, and I have the option to add either Sirius or XM.
What are the contracts like for each? Do they offer trial runs?