You don’t need to start with expensive high end streamer options to get top notch sound with Roon. I do it with many Roon endpoints ranging in cost to $0 on existing computers, tablets, smartphones to a newer $500 streamer to another that cost way more. THEY ALL SOUND REALLY REALLY GOOD, no obvious flaws!!! Toss in smart use of Roon DSP and you can have it all on most any reputable Roon endpoint.
I run Roon on at least 6 or 7 different devices in my house as needed and RoonArc remotely. WHich Roon is best? I have no clue. It’s the rest of teh system Roon is running on at the moment that really matters. Maybe some day I will attempt some kind of unbiased direct a/b comparison but frankly I really don’t care. IT’s not rocket science! Start with a computer tablet or smart phone for not much. Add to that from there as needed. I’m sure the reliable high end Roon devices sound great as well. They better considering the systems they are most likely running on.
The fact that Roon runs on all these different endpoints from commercial computer up to high end streamers is one of its most valuable features....no hardware lock-in!!! The others are sound quality, User experience and extremely powerful and flexible DSP. Roon is perhaps the single best investment a 21th century audiophile and music lover can make IMHO.
So I am a big Roon fan, eh?
Cheers!