I have been a Qobuz subsciber since their beginning in France. Hi Res was is still is audibly better than cd quality. I used Slimdevices transporter and now Aurender NH100 which ties in to Qobuz nicely. I also bougnt many hi res albums (over 100) . The hard drive version used to sound a bit better, but now with clean ethernet the difference in gone.
I had Spotify for its suggestion algorithm, then got the songs from Qobuz. Big difference in SQ. I cancelled Spotify to protest their disinformation endorsment and moved to Apple music., much improved since 5 years ago. Better suggestion algorithm, covers all languages and styles, not 80s biased like Tidal. (I think MQA is not convincing and doomed).
Cancelling any subscription on the web is a pain. Everything is done to make you fumble and forget a little detail. Qobuz should do better on this.