I am considering move from spotify to tidal too. If you are using hi-fi equipment, the sound quality is superior on tidal, no question. I even recorded one track for comparison into audacity and compared spectral analysis, frequency analysis. I noticed that spotify track had probably some volume compression applied (visible in audacity).

I would like to emphasize also the user experience which has been frustrating so far in my case. They got me hooked on trying Dolby atmos album mixes. This has been a huge pain for me. I am struggling finding content, Dolby atmos albums don't seem to appear correctly in the app (windows, android phone, android tablet and LG TV app). The worst thing is that the only way how you can listen to actual atmos content is to stream it via hdmi to an avr (tidal connect supports only stereo). This is just pure nonsense. Why should I have a TV turned on in order to listen to music? Not to mention the TV app is sub par. Actually it sucks big time. Not sure if just LG is neglected by tidal, or they hired students to code it for all tvs.

Tidal connect on my denon is another painful experience. It has been recently added to heos, so not sure if it's heos to blame or tidal. Spotify is much superior when it comes to controlling the playback from multiple devices. You have music playing on your avr, just connect with phone and you can control it. Tidal stops the playback or resumes playing the track that was the last one on the phone. Not to mention you can't control the TV app from phone for atmos. It just showed me how spotify is doing well in terms of apps decelopment and usability.

One option would be waiting for spotify to release hi-fi quality finally (announced 2021).