The following is a comment I made on this post at the official Hearts of Space blog. I suggest you read the HOS post, for even if you don't listen to HOS, it's an interesting and revealing story. Pretty much, don't waste your money on crap services like satellite radio as programed by XM/Sirius, and instead use and support quality online services, many of which are free, created by passionate DJs and hosts.
Back in 2001, when XM came out, I was very impressed and excited. Around 2004, I finally had it via DirecTV, and fell in love with Beyond Jazz. I also appreciated the fact that Hearts of Space was carried, though I always listened to HOS via radio station KCHO. I no longer have DirecTV, and considered XM until I discovered that Sirius/XM no longer has the material I would be interested in, namely Beyond Jazz. Thankfully Beyond Jazz's Russ Davis now has an Internet stream similar to hos.com, at russdavismoja.com. No point supporting soulless corporations, when we can directly support the DJs and artists that we care about! Sirius/XM may very well fade away, not realizing they killed themselves by alienating the very people who would support the concept of niche programming.