Are you also using the Marantz to process and output Atmos content in some 5.1.2 or 5.1.4 or similar configuration? I am toying with what to do next, which would also mean a switch away from a M Pro, I’ve been considering Marantz and Denon options, as several are coming to end of line and are reduced.

Main: Marantz SR8015 / Polk Audio Reserve R500 / Bang & Olufsen Beolab 4 / Arendal 1961 1V / Oppo 203 / WiiM Pro Plus / Apple TV 4K

Spare: G68ADV, HD621,DSP5000.2 & DSP5000.2 HC. ATC SCM20PSL, C3C. Rotel RMB-1077. Bang & Olufsen Beolab 1 & Beolab 7.1. Kef Q150. Dynaudio Xeo 2.