Spotify vs. Apple Music vs. Google Play vs. Tidal: Which is Best

I can say that spotify and apple Music is the best among other based on my experience. And MUSCONV is the tool to import spotify to itunes, google play to tidal, and etc

Somebody earlier stated the Tidal interface on the desktop was poor and I somewhat agree.
I stream Tidal via my Bluesound Vault which means using the android Bluos app rather than the Tidal app.
I have compared the Tidal android app to the Tidal functionality inside the Bluos app and it is no contest.
Using Tidal inside the Bluos app is far superior to Tidal own app which yes is odd but there it is!

And as far as SQ, Tidal by a landslide.
Some complain of the search functions and limited jazz/classical library.
I have never had an issue with search and do not listen to jazz or classical so cannot comment but can state that their rock library is much larger than Deezer or Quboz right now.

Here’s a vote for Apple Music. The selection of music and the quality/resolution of streaming is just fine. After all, it’s digital.

Also, Tidal seems to have a problem with paying its royalties. https://www.engadget.com/2018/05/16/tidal-reportedly-months-behind-on-royalty-payments/

I vote for Spotify...Although sometimes I need to stream apple music to google home. 

I prefer Apple music as I switched from Spotify to it using MusConv tool.