Roon is good for music discovery and good for music lovers.
So is Plex/Plexamp which I use and costs less for those streaming from their own music library and Tidal only at present.
If I did not already have Plex I might try Roon. However Plex allows one to stream from anywhere via internet connection or download. Home, work, car , anywhere. That and cost are two areas that Plex beats Roon.
Plex/Plexamp also has advantage of running on most any common computer tablet or smartphone so no special hifi devices needed for CD resolution streaming.