To clarify, my music preference is classical. I have used 3 free internet built in apps; chromecast, whatever the 851 uses, and bluesound's. They all have plenty of stations or enough, although I think the bluesound has more with better graphics for each station. I used only remotes and their respective unit displays for the other 2.
The 851 does display incoming quality from cdp or USB. It would be nice to see a display that show both incoming quality, and outgoing quality that is measured( not predicted), if so-called up- sampling is done, which I detected no improvement from by ear.