I am MCH like you dudes.
I run 3 dacs through an I2S bridge from a PinkFaun streamer. That's 3 Matrix X Sabre Pros. EQ'd and DSP'd in JRiver.
On the output side I have the Benchmark and 3 NC400s.
The XMC-1 is in the middle. Only used as a switch and volume control...analog MCH inputs to the balanced outs.
But I do employ the HT function of the XMC through HDMI from Directv/Oppo.
I don't use Dirac as I never liked the bass management function, but I am proficient with REW and have produced a strong house curve.
Unfortunately, my room is a bit noisier than above, best I can get is high 30s.
So is the consensus that the XMC is the best I can do given the above?
And yes, MCH is just better. If you don't believe it, ask Floyd Toole as quoted above.