Upgrade your DAC. In my experience the DAC has 95% of the sound the streamer is really not as important IMO. Find the streamer with the app you like and add a DAC you love.
I did the optimized PC then to a Roon Nucleus and finally an Aurender A10 and no, not worth the upgrades at any stage. If you need Roon to live, then find a Roon server you like but do not buy that overpriced nucleus major disappointment in my experience. (Just open one and see for your self)
The Aurender A10 was ok but to be honest not $7k worth IMO. I don't particularly like the DAC in it its rather boring. If i was really honest my prior Schiit Grunder milti bit DAC ($1200usd) was far better musically then the internal DAC in the A10. Streaming wise the Aurender is ok the app is a bit finicky IMO, but an upgrade over the Roon Nucleus for sure.
Personally, I would not do it again knowing what i know now. I would have got a streamer i liked the app for and upgraded my DAC.
Really my experience shows a dedicated and optimizes PC/Apple based computer is far better than any dedicated streamer I've used. The catch here is it has to be optimized for audio streaming and nothing else.
anyway, your milage may very but that's my experience so far with streamers.