Qobuz is working great through my WiiM Pro Plus -- except for the fact that with two of my sets, the individual works aren't specified, so I just see a long list of movements. That's a pain.
I thought Presto had a higher profile among classical music listeners, but maybe it's just my circle. One of the nice things about Presto is that when you buy a disc they'll also give you a digital file (if available) that you can stream or download. Therefore, I've collected a few that I'd like to stream. I'm working this from both ends; I also contacted Presto about it.