I still think Spotify is a better product, for the fact that I can stream it on basically anything that I own. I’m a Sonos user, so until they support that, I really can’t even consider it. It is really awesome though that Google integrates your own collection with their cloud collection. This would essentially negate any reason for me to have my computer on to serve up my local library to my Sonos and other devices around the house.
I’m still very happy with Spotify overall, but the Collection feature cannot come soon enough. I wish they would have rolled that out first before the “Follow” and “Discover” features.