I am relatively new to Roon and Qobuz. My initial impression is positive on both fronts. My expectation is that some months I will listen to little music and therefore, it makes sense to suspend Qobuz and re-start later, listening to my personal music collection on Roon.
If I do this, will Roon retain my Qobuz favourites, playlists etc?
I had a Qobuz trial account last year and if I sign-in now all the albums I favourited load into Roon. Unlike TIDAL you can have an active account without subscription.