I do not currently use any music subscription service but usually take a peek at them when they become available to see if it might be worthwhile to subscribe. Ultimately, I do not consume that much music beyond my current library so subscription services like these are not for me. However, I know for many who are always on the prowl for new music to add to their collection are fans of some of these services.
The folks over at Mashable Infographics put these stats together to show what is popular and how their services breakdown. This is a really nice snapshot to get all the info in one place.
Do you have a favorite?