I have been using Qobuz for about 3 months now. Yes, it is expensive, but well worth the difference IMHO. In A/Bing the same song(s)
with Spotify/MOG/Qobuz the difference in fidelity was easy to hear. Qobuz at 16/44.1 is approximately 4.5 times the resolution of 320kbps (MOG, Spotify). Those that say they do not hear a difference is because: 1) They have a hearing problem, or 2) They do not have the gear that can reproduce that audible difference.
Also, Qobuz is saving me money in the long run. When I got to figuring how much I actually spent on time, gas, and CD purchases in a month's period of time I saw that is was much more than the monthly Qobuz fee. Also, even though I have about 10,000+ songs recorded to my laptop via FLAC, with Qobuz I have access to about 17 million songs (and growing) all in CD quality.