The latest V3 is remarquable compare to the previous version.
The sound quality is global here, heaven sometimes it seems the music sound a bit loody, but it can depend of the recordings.
I’m coming from Rern R-Audio distrib, with is on some points really better and others (instability due to open source concept )
Where it’s better 
Radio station management, easy. to add new radio station with logo and online info
PDF booklets built-in reader
faster performers info on screen
Sound more detailed
Additional alphabetic search on library
“high res” logo on high res albums jackets
faster application interface.
sometimes it’s with some regrets to have paid for the “full” version of volumio, as it’s looking restrictive on common usage.