At the moment I'm trying out Tidal with Black Friday offer. I have to say that I think it sounds a little bit better than Spotify with the classical music I have compared. However, I haven't been able to work out how to get Master Quality Audio through the stereo yet. Our Yamaha R-N602 had a firmware upgrade and Tidal can be selected through the MusicCast app on my iPhone. However, that streaming app only streams at CD quality. On my Mac I can listen to MQA files but I only have reasonable speakers connected and through AirPlay I can't stream higher bit rates than CD quality.
What I haven't tried yet is connecting the iPhone through the USB port of the Yamaha. I can listen to MQA files on my iPhone but I don't think my bluetooth Sennheiser earphones do justice to MQA files.
First impressions though are good. There are some interesting things you can read about the music on the iPhone app.