I used to be a Pandora Fanboy, then I discovered Slacker. With over 4 times the music that Pandora has, Slacker kicks some serious A$$! I want my music service to have a LARGE database of music on-hand, and Slacker truly delivers. The customization of your personal channels can not be beat. I have been "Plus" subscriber for over a year and use this great service a great deal throughout the day. If I had to have only one app on my phone, this would be it!