Streamer/Server to replace Innuos Zenith

My Roon/Qobuz based digital front end has separate processors for server, end point and DAC and it's stable. Right or wrong I credit the stability to processing headroom and AuraLic sfw/hdw integration. I also suspect AuraLic's integration is the most critical link when it comes to stability, my Aries has not been power cycled since its last Lightning DS upgrade and it's still playing well with others. I do have to keep an eye on Roon upgrades because they tend to introduce undocumented features (bugs) but beyond this I have good stability. I also balance DSP across the Nucleus and Aries to avoid saturating the processing capacity of either device. 
 
Silent Angle N16 Switch
Roon Server -> Roon Nucleus+ 
Roon End Point -> AuraLic Aries G2.1
DAC -> Holoaudio May KTE
Paul Hynes SR4T and SR7T LPS
Network Acoustics Eth cables, Filters and USB III cable
PC's FP-TCS21/IeGo 8095 and Oyaide Tsunami/Furutech FI48 NCFR

I’ve been using a Melco N100 and couldn’t be happier, controlling with the MConnect app.  I wanted to add AirPlay and Chromecast capabilities so I added a Cambridge Audio CXN streamer.  It also has enhanced Internet Radio.  It also works quite well with the Cambridge app and into the same DAC almost sounds as good as the Melco.  The Melco and the CA together cost about 75% of the Innous

What most people don’t realize  with a high quality dac-streamer combination 
you eliminate the need for a dedicated server ,a little computer with a SS driver 
is optimum for have a modular design like the Bricasti it is very honest to the musical signal and used in many recording studios for what it brings to the table ,
land isolation from noise and 2 less cables in needing a separate streamer ,
If using Roon and QObuz which sonicly i feel better then no HD needed , tidal MQA is just a $$ per license and not even lossless .that is another story . I don5 have MQA Bricasti thought a waste of $$ ,The key cable is from the Ethernet switch which I prefer Uptone audio Ether regen to my M3 dac-streamer 
and cables do make a difference the Wireworld Platinum Eclipse 8 is a Fantastic Ethernet cable and  the best I have tried several up to $1k retail $850 for a 1 m which is minimum length to buy ,and you can find for 20% off . With the Bricasti everything regarding low noise ,filtering, and pre,post voltage regulation is very well thought out ,and on their upper lever M1-,M21 dacs are R2R, as well as use dual  AD1955 Multibit dacs , dual differential modules on all even on DSD and excellent Analog preamp section if you choose to implement it and all use separate linear power supplies.either 2 or 3 .
https://www.bricasti.com/en/consumer/home.php

@dfurry, I like your streaming system setup. Presently I’m just using a $20 L-Com Ethernet cable going from my router to my D-Link network switch. But I’ve got a Network Acoustics streaming cable going from the D-Link switch to an ENO Ethernet filter and from there to my ROON Nucleus, which I really love. Is there any need for an upgraded Ethernet cable leaving my router going to my network switch, as Rob Osborne from Network Acoustics told me it wasn’t, or isn’t one really necessary? What has been your experience? Thanks. 

This is so open and so many option exist it is tough to offer a firm direction.  

What you do really depends on the DAC or whether you go DAC only (Chord), DAC & Renderer (Bricasti) or DAC & Streamer (Naim)

First question is are you happy with the Qutest?  It you are, I would get a Roon Nucleus.  It is appropriate in terms of quality for pairing with that DAC and it will give you a nice step up in terms of performance.  No need to go with the Nucleus+ unless you have a massive (100K+ tracks) local library.  Connect via USB.  

If you want to upgrade both, the question is far harder.  You mention above you like Bricasti.  Bricasti DACs with the network card are awesome and pairing with server is very appropriate.  I would pair an M3 with an Antipodes S40.  I would pair the M1 with S40 or K40 depending on your local library and rest of system.  M21 definitely a K40.  

Alternatively, if you went with Rockna, I would take a different approach.  Best results come when thinking holistically.