After comparing the sound quality of Amazon, Spotify, Deezer and Tidal, the dynamic range of Tidal really stood out - even in lowest quality. At that time, I read that Tidal had the highest payout to the artists. I also like that the service is partially owned by several artists.
The recommendations and feeds are really top notch, just the right mix of stuff I know and like and nice surprises. The "Daily Discovery" often explores a certain genre or mood. There are so many cool bands I've found - also from genres I don't usually listen to. I can wholeheartedly recommend the service.