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.
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.