I recently upgraded to a Small Green Computer Sonic Orbiter i5 with Ultra Rendu bridge. One reason I did this was to try Roon, which I like. I might like it too much, as all the info it provides can be a distraction from listening. But the best thing has been combining Roon with Qobuz. This allows you to seamlessly merge your own library with music you add from Qobuz. For example, I am an Elvis Costello completist. But there are a few albums, singles and collaborations that I was either missing or unaware of. A few clicks and most of these were added to my library. They're not downloads, so if I cancel Qobuz or if Qobuz discontinues them, they're gone. But there is no additional cost over the Qobuz subscription for this feature. Now, if I play Elvis Costello music, these Qobuz selections will be mixed with my own collection.
Sound quality, I have to say that even Red Book resolution stuff from Qobuz sounds wonderful to me, rich, detailed and with a large soundstage. No etch or anything that induced listener fatigue. But I really didn't use Qobuz much without Roon, so it's hard to say what Roon's affect on Qobuz is in my system.