Anecdotal, I’ve not actually had a lot of instances (if any) of Spotify having something but Tidal not, usually find albums that I’m interested in from band camp no problem and if it’s missing its missing on both. Sound quality is noticeably higher which is the reason I tend to prefer, the app has gotten better in my experience
I have all my digital copies on my NAS with jellyfin to stream them as well, sometimes it’s just easier to stream off tidal or Spotify though