Ok I don't consider myself a pro in this, but I have spent a lot of time and thinking behind this and this is what I feel in short...The Tidal Music Quality @ 44.1 kHz/16 bits the quality is Wow ! It is mind blowing ! It is really a commendable job for a streaming music station to relay this kind of music quality. It is very good !! Second in quality for me comes Spotify (I am talking about Spotify Premium) and last comes Apple Music, in terms of content I thought Spotify content was more detailed, the music discovery, suggestions are very good ! Especially the Radio of Spotify is fantastic compared to Apple Music and Tidal. The UI for me of Spotify is very minimal and simple and easy to navigate, so is Tidal, Apple Music looks so much loaded with features that it gets mind boggling ! So at a the moment for its content I would rate Spotify much higher than Tidal & Apple Music !!