Your space is beautiful but screams for some diffusion and absorption.
I’ve got about 200 hours on the ATC SCM11v2 and must say I’m very impressed. I have a small space and thus am limited to rather small/light stand mounts.
The sealed cabinet makes them a breeze to integrate with sealed subs. The tweeter is perfect to my ears, and the bass articulation above 60hz is utterly fantastic. The mids are truly special, of course. Seemless.
I’m feeding them with M700 monos so they don’t want for power. They are able to easily load my room too far higher than I can tolerate dB. They also sound very nice at low, 50-60dB, well done.
I can only image the larger cousins in larger spaces!