I have 3 systems. The main one has a DCS Vivaldi stack and the other 2 have the Bryston BDP3
I have owned the top of range Melco and the Aurender, and Innuos statement also the tested the Tyko Extreme
The DCS is by far the best .. surprise surprise.
I quite liked the manic moose when it was available but when it was discontinued I have been very frustrated with Safari
I tried Regalion and also Bubbles somewhere. Yes it is a serious irritation with the BDP and Bryston seem to not care
Roon is sonically inferior when used with the Vivaldi upsampler, and the reasons can be better explained by a techie
Roon takes up more resources than my Nas has, so I had to run it on a linked ssd drive (see.. Roon interferes and does too much with a normal flow)
Also I disliked the Roon interface as I want a simple file structure
The Aurender app is by far the best out there, but does not work with DCS or Bryston
At any level below the DCS - my preference is for the BDP3