I don't normally go out my way to say that a service is great but spotify is the way forward I no longer use iTunes after 10 years and all my music being on there I find everything I need on spotify. Only thing I'd love to see is spotify on more platforms iPod nano or something similar for the gym so your not reliant in always using it on your phone. Best music service no 1 for me!
Glad to hear you are enjoying Spotify! Unfortunately having Spotify support on an iPod nano is unlikely due to how the Spotify ecosystem is set up, it requires an application to decode the content and track plays.