I have tried Tidal and Qobuz. I found sound quality the same. However, I prefer Qobuz for several reasons.
- It remembers what genres I like, and doesn't come up with a hip-hop home page every time
- Offers ability to purchase downloads at reasonable prices
- Search for classical works better than Tidal did
- Better metadata for classical (composer, etc.) than Tidal
- Fewer tracks labeled simply "Allegro molto" or such, without the name of the work or composer