Unfortunately, Qobuz doesn't work for me: some music that is important to me is missing, and the recs are simply not good. Tidal and Apple Music, on the other hand, work quite well. I was able to compare all three last week and in the meantime I haven't noticed any differences in sound quality, but I used to before the support for the hi-res.I was a Tidal user for many years, switched to Qobuz. I never used the baked in Tidal version on the AK and always sideloaded the APK. I never paid attention to the sound quality limitations. I understand that the color is related to the quality of the music. I am not debating that this is important to you, and have no horse in the AK race, I am only seeing very dramatic reactions for features, not issues with the sound, such as hissing, clicks and pops etc. and all of the other things you have seen in the Cayin thread, as I see you there as well.
Let me add, there are things on my wish list too. Things I was aware of before I bought the unit.
So just to clarify, I don't have any "issues" with the SP3000. It's very solid and beautiful, and I also really like the minimalist UI. Despite Tidal, I'm very satisfied and I would buy it again every time.