I own the Vega, and enjoy the Auralic app and Qobuz. I tried adding Roon, but it didn't add much to the experience for me, and was another layer to deal with.
I also subscribe to Youtube Premium and enjoy the wide variety of performances available through my TV. You may encounter some syncing issues (video and audio) with the Vega, since there is buffering taking place. I ended up adding a pair of JBL powered speakers for TV and swap my REL sub between my primary system when what members here refer to as "critical listening"..