XM has a sizable suite of hardware and software products and the latest version of its XM Music service has a nice slew of new features and fixes. While XM may be the largest distributor of music in the US, the company is also well known for its quality of service and its user friendly online interface. To the chagrin of many of its competitors, XM has kept its prices in check, while maintaining a commitment to customer satisfaction. The company is a leader in its field, with more than 2 million subscribers and an impressive array of partners and resellers. With a nifty online portal and a robust mobile app, XM makes it easy to access and stream all of your favorite tunes on the go. And don"t forget the perks for seniors, veterans, and active duty military personnel. XM has also been an industry innovator, most notably by winning the first mobile music service contract. This is a big deal, especially when you consider that this is a major carrier with a large subscriber base.