I had Slacker on my Blackberry and thought it was ok...until I tried Pandora. lol Slacker has preset genre stations you can choose, but Pandora lets you select individual artists or even songs that create a station of similar artists/songs...I have a "Yellow Leadbetter Radio" station lol. It will play Red Hot Chili Peppers, etc. You can train Pandora to play songs you like and skip ones you don't. It's amazing.