[Posted on January 10, 2007 - 2:35 PM]
The two satellite radio companies in North America, Sirius and XM, have been waging war for a couple of years now, and today's battle signifies a shift in the balance of power. XM has been the leader in both market share and technology since Sirius' inception. XM has released technology a full generation ahead of Sirius, but today Sirius was...




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