I like Qobuz better than Tidal primarily because, although they both have similar number of songs (90 millions), the Qobuz has more newer productions. For example, Qobuz has the albums of Beady Belle, the female singer I like, after 2020 but lacks the prior albums that Tidal only has. With the mid-level suscription, you get higher resolution of music up to 24/192 while Tidal entiled you up to CD quality only.
In terms of mconnect vs Audirvana, I was advised that, technically, the quality of streaming using Audirvana or mconnect is the same. The sound quality of streaming mainly depends on the quality of the (dedicated) streamer, the usb/spdif interface quality and/or internet network. iFi ZS has purified spdif and ANC on usb which suppress jitters and sounds quite nicely if not surpassing the streamers many times of its price.
As such, there is no obvious reasons using the paid Audirvana while one can be well served by the free or one time minimal charge mconnect player. At least for me ...