Hi Bill
I just received the XM Radio with my new Cadillac in May of this year. It came with a 3 month trial, and I went and purchased a 2 year plan.
I absolutely LOVE it! I have not listened to regular radio since. The main difference between the two are XM will have Major League Baseball next year for FREE!!! Serius has the NFL as a premium add-on.
Check out the program listings to see which covers your favorite Genre's the best.
Me personally, I'm sticking with XM Radio.
Al
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Al
Pa4x - LD Systems Maui 28 - Mackie Thumps