I mostly use Slacker, the playlist is much larger, better music selection, and even though it doesn't quite have the audio quality of Pandora, it doesn't cut you off after 40 hours. DroidLive is nice too, but you can't skip if you don't like the song since it's all ShoutCast stations.I heard good things about DroidLive, I'm gonna try it out. I am currently using Slacker and Pandora right now