I've tried both and Rdio definitely has much better discovery features, but I settled on Spotify for 2 reasons: 1. The ability to mix in my own music. There is

I've tried both and Rdio definitely has much better discovery features, but I settled on Spotify for 2 reasons: 1. The ability to mix in my own music. There is still plenty of music unavailable to these streaming services, so I need to be able to sync and listen to my own mp3's. 2. Great desktop client. I just prefer client applications over webs apps when it comes to music. And the Rdio for Mac client doesn't really feel native - it seems like a wrapper for their website