Ahhh JV as always.. very one sided and opinionated... to each their own
Ya know, many people can speculate about what a company is gonna do, but unless you have inside information, you'll never really know. So you might think Sirius might loose out, but until it happens you'll never know. What I suggest, since Martha Stewart just signed a deal with Sirius, is that you get in good with her. Possibly start by helping her find ways to elaborately decorate her ankle bracelet. Then once your in, start buying lots of stock and see if you can plug her for details. You'll cash in! Course, if the wrong people find out, you might also want to start buying some soap on the rope.
Sure Stern is a big push, but you also have to realize that a lot of people are waiting till january to make the move with stern, and when they do I really think it's gonna be a big push. Will it have an impact against XM. I think it's hard to say, but it should be interesting to see.
Personally though, I still prefer sirius. Another reason that Pam and I decided to go the sirius route was the fact that they carry all the NFL games. So from any where in the states, I can listen to my buddy Myron Cope do the color commentary for the Steeler radio network. This was a huge seller for Pam and I. Also, they carry NHL (when they finally play), Nascar (*insert dueling banjos*), NBA Basketball and all College Basketball (especially the playoffs). They don't however, carry MLB. So that is one thing that XM has going for it. Doesn't really bother me that much, cause I don't like baseball, but if that's your thing, that's something to keep in mind.
Personally, I believe that sirius has better programming and no commercials (although on the 2 comedy stations and the news stations {Fox news, CNN, Air America, etc.} and some other talk stations they play one or two commercials an hour (maybe +/- 1-2 extra, never really payed that much attention)) while (at least it's my understanding) XM has commercials on every station (although limited).
Best bet is to do you're homework... I know if you go to sirius.com you can sign up for a free 3 day trial to stream online (also once you have a subscription you can stream anytime you want), I'm not sure if XM has this option or not, but it will really give you an opportunity to listen what the music stations have to offer.
Oh another possible downside to sirius. You can spend the $500 and some odd dollar to get the life-time membership, but, it's only on that radio. It's my understanding that if you wanted to get a new reciever or had to replace it, you would have to pay it again if you wanted the life time membership again. Just trying to provide all the information that I found out as I researched it. Me personally, I'm happy with my decision.