Cost: Free with commercials and limited song-skipping; $36 a year for no commercials and more song-skipping.
How it Works: Create personalized radio channels based on favorite songs, artists, and composers. There are also preset genre stations, such as 80s Pop, Classic Rock, and Today’s Hits.
Cool Perks: You can use it with social networks, like Facebook and Twitter, but you aren’t required to. More than 15,000 comedy tracks.
Drawbacks: Smallest song collection in the bunch (about 900,000 tunes); no rewinding; you can’t merge your own songs with its library.
Best for: Tech novices who want a service that’s easy to use.