I agree that a lot depends on your overall system and preferences.
I have the Moon 891 and a pair of 761 amps in bi-amp mode. I have high end interconnects and custom designed speaker wires. The speakers are Sonus Faber Serafino. The room is 17' by 16' with 8.5 foot ceiling with acoustic tiles and wall to wall carpeting. I also have carefully controlled power.
The Moon system is terrific. Reasonably but not overly analytical and not mushy. I listen to mostly classical music mostly streaming on Qobuz. This works well.
A lot depends on the speakers. Sonus Faber goes great with Simaudio Moon. Sonus Faber are also on the warm side compared to say Magico.
So, as noted by others, a lot depends on your overall system and preferences. but chances are the 891 will work extremely well. One final point. Simaudio is a terrific, reliable company. They have been entirely supportive of me as I developed the system.

