I've been trying to figure out which music metadata database is worth my time "improving", since there are three that are commonly used. MusicBrainz, Discogs an

I've been trying to figure out which music metadata database is worth my time "improving", since there are three that are commonly used. MusicBrainz, Discogs and Rate Your Music. I use Discogs currently because you can expect high quality metadata, and I use that data in a Foobar2000 plugin to tag my music correctly. It's the constant questioning I do for Wiki sites, since there are multiple for most subjects. Am I alone in this struggle? I wouldn't mind being talked out of using Discogs for the sake of creating / managing metadata that will be the most useful.