Well, I have to say that Harmonoid is the best one I’ve found, it has a ton of cool features, it works and it allows you to be able to see your collection by album and it doesn’t use Electron. Right now its development has stalled a bit but it’s still pretty much in good shape, though.
I use Guayadeque for basically one reason only: it supports multiple libraries/collections. I wish more players had this feature. My collection is basically unmanageable without it, and it’s large but not that large (about 30k tracks). Are they any other players that support multiple libraries?