I've had Amazon HD since it's inception. I felt it was a step up sound wise from Spotify. The family plan is about $200 annually.
I tried Qobuz for almost a year and to my ears it was an improved sound presentation the imaging was much better but the selection was really lacking compared to AmazonHD Qobuz would have some of an artist but seemed not to have my favorites. They have a way to request an album be added but not once did any my requests be filled.
It was finally too frustrating to continue and the improved sound quality wasn't worth having both. The Qobuz app is also buggy and poorly designed. (no scroll bars on the saved library... come on).
I usually use my local storage for the music I listen to and use Amazon to explore new stuff. I really wanted to like Qobuz but except for the sound difference Amazon is a much better product.