I don't know if it's better, but it's easy. I rarely look at my last.fm scrobbles. For me it's about hearing a variety of good music while I'm banging out code, driving, or gaming. I sometimes use last.fm and hypemachine to dig deeper but there are many more steps involved to get to hearing music that way. With Spotify, I get to be lazy.

Discover Weekly has been great. Shared playlists are great too. As for radios, they were OK when I first threw my music at them, but now I just hear the same old stuff.