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.
What do to you use right now to connect to a Subsonic server? I’ve used Strawberry and Sublime. Is there something else?