Enjoying Spotify Premium

According to last info I checked only tidal and deezer did 16/44 Red book quality.
Quboz should rival tidal in sq when it launches here

But I think some of the point here is the ease of use and search function where Spotify is supposed to be superior, at least for classical and jazz

If you are Spotify premium, you will have right to download and play Spotify offline. But if you are Spotify free, there is no way for you, only to play Spotify online. Fortunately, now you can use Spotify Music Converter Windows to remove DRM protection and convert Spotify to MP3, AAC, WAV, FLAC, M4A, M4B, etc at 30x faster speed with lossless quality. You can check more info about how to remove DRM from Spotify on Tuneskit. Hope this tip is useful to you. 

I have both a Spotify Premium and Tidal HiFi subscription.  For serious listening I prefer Tidal, but Spotify seems to do a better job of putting together mixes and playlists based on what I listen to, giving me a chance to discover new music (or old that wasn't aware of).

That is right, spotify music are drm protected, that makes it difficult to enjoy elsewhere. In order to play Spotify anywhere, you need to remove DRM from Spotify as well as convert spotify music to mp3 songs for any devices. Thanks to the spotify audio converter 
in the market. 

The Spotify catalog is the best out there. I used it for quite a while and when I upgraded more than one of my components the S Q suffered. I'll have to give it another go since they've made changes. For me, the Tidal library is  terribly lacking. Hopefully Gobuz won't disappoint.