Thanks all for the feedback and opinions. I went all in and got the 818v3. Still putting it through its paces, but for me, the telling moment was on listening to Jazz at the Pawnshop (Ultra HD Recording) and hearing stuff I never heard before. I've listened to that CD rip hundreds of times and could not believe the improved clarity on the 818 vs MC.

I am looking forward to trying out Tidal potentially this weekend.

Theater: 861v4_LPS, 818v3, HD621, Oppo 203, Lumagen Pro, DSP8000SE, DSP5500C, SW1600x2, DSP5500, Epson 6040UB, PS4
Living room: 861v4_LPS, HD621, DSP8000SE, DSP5200C, Oppo 203, Lumagen 2143, 818v3, Sooloos/MC600 Bluesound Node
Bedroom: M80
office: G68D, DSP6000
Garage: DSP5000
Storage: M33s, DSP33s, DSP5k, 501, 518, M1500, G98DH, SW1600