I've started a Spotify Premium trial, and while it's pretty great, I'm still a little unsure of the best way to integrate my MP3s with the streaming online catalog, and whether other services offer better options.
Do any of the other services combine the streaming subscription model with the cloud model a la Amazon Cloud/iTunes Match? In other words, the flip-side of synching for offline use - all your "local" files in the cloud to supplement/fill in the gaps in the service's catalog so you don't need to take up space on your mobile with all your local files and can stream everything?
Any other clear advantages/disadvantages to the services? Labels covered? Thanks...
