Rating my music; eliminating the average

We live in a world where there's no need to tolerate mediocre music. Digital music services like Pandora, Last.fm, Lala, Slacker, and others make it easy to find great music and to skip bad music.

One of my latest projects is to get a quality collection of music on my iPhone. Managing music is such a pain, so I've got a new model I'm trying out. I want a solid set of great music that I always will love listening to that will always be there, and a separate collection of new music I'm trying out.

I've started building my great music set by putting all of the music from all of my favorite artists on my iPhone and listening on shuffle. I'm rating each song I listen to. To keep the ratings consistent, I'm using these labels:

1 star - Bad. delete.
2 stars - OK. Reasonable background music, but very skippable.
3 stars - Good. A step above generic, but still skippable.
4 stars - Great. It's got something (e.g. a hook or a rhythm) that resonates with me.
5 stars - Excellent. This song moves me. Always worth a listen.

I'm certainly removing the 1 star songs, and I think when it comes down to it, I'll get rid of the 2 star ones as well. Life's too short and there's plenty of new music to explore that it's not worth the time to listen to merely adequate music.