Have tried Tidal for better sound quality and Apple Music for improved integration with CarPlay and Apple Watch. They are just not as good at suggesting and curating music to my tastes. Hopefully Spotify will do as a free upgrade for Family packages so I can justify upgrading to that at the same time.
I find Tidal great with Apple Car Play personally. Works really well. I did have an older iPhone with much older iOS and I did have problems with that. I had to start the album playing on the phone, because the car would take ages to figure out what was on my phone downloads within Tidal.
But I don't get that issue now with the current iOS.
The only thing I don't like about Tidal within iOS is what John Darko referred to the other day: you have to have the app open on screen for it to continue to download albums for offline listening, whereas apparently Android you can ask it to download overnight and it'll do it behind the scenes without any issues.
But I just keep half a dozen albums offline at a time, and change them regularly.