The important thing to know - Foobar2000 is a media player. And you will need some time & the will to DIY-setup the whole thing to your needs.
Out of the box, it does a lot less than MusicBee does. But, once set up, there is very little you can not do with it. The biggest down side is its' playlist management imo, which is why I am using MusciBee as well, which is much more rounded/polished/modern.
I've just used foobar for 10+ years as my go to media player & maintainer, so I am used to its' ways & prefer its functionality in some areas (most likely just to being used to it that way).
There is a discogs tagger here for MusicBee as well. Not sure how that handles sub-headers though... but I would suggest trying that, before considering learning & setting up foobar from scratch...
c.