After several months of trying out both, I have settled on Spotify as my winner of the streaming apps. I have also briefly tried out MOG, which was ok but not to my liking. On the surface the scores make it look like it was a very close battle, and in reality it was… but mainly because Spotify has not been able to replicate their excellent desktop app on the mobile, making the experiance on Spotify feel second rate. This is amplified by the fact that the desktop app is FREE, while the mobile app is $12/month. I think Spotify has their priorities around the wrong way, new features and the best experience should go to those paying. In contrast, the difference between the mobile app and desktop versions on Rdio are minimal, and there are constant updates, 1-2/month meaning that any bugs are normally quickly resolved, and new features constantly added. If Spotify are able to close the gap between the desktop and mobile versions, then they will easily pull away from the competition. But as it stands, there is very little to separate the two mobile apps. It came down to better radio implementation, slightly cheaper price and more logical playlist management, which tipped the scales towards Spotify. But if you only plan on using your mobile and never the desktop, then Rdio could be the better choice.