I reinstalled 1.8 updated software and tied into Qobuz I have to say it is so much better musically and quite up to the cPlay software sonically .
Yes, I think Roon 1.8 has excellent sound quality. I previously used HQPlayer with Roon as I wasn't satisfied with the latter's SQ. Definite improvement with 1.8.
Not so sure about some of the interface changes with 1.8.
For instance, I don't like the way album credits are now displayed - spread out circular pics of artists and small writing makes things harder to find/read than the arranged list in 1.7.
I find the Roon music library features/integration great for my situation and it's music discovery features and linking are unparalleled IMO.
For those who want to expand their streaming library and discover new artists suiting the listeners individual taste, then Roon is more than worth the cost.