I have both and prefer Qobuz because I think the SQ is a bit better and it offers more high res cuts. SQ is subjective and I find the difference slight but noticeable.
I think the Tidal interface is better and maybe it has a greater selection
In my opinion both are really good- millions of lossless tunes available at the press of a button for a modest monthly charge
it’s a long way from the record clubs of my youth