I don't have an answer for you cause I don't have either one, but one friend of mine has XM and always listens to the Opie and Anthony Show, says it pretty funny, Sirius has Howard Stern which I think is a similar kinda show (not sure though). I would think both have more music stations than you could ever sick of.
My question though is what is the diff between the US and Canadian versions of both XM and Sirius other than the addition of the French stations (which are useless to me)?
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