Acoustics experts - a little help please

I have diffusers at the first ceiling reflection points along with other room treatments and I have the best imaging and soundstaging of any home system that I've heard. I have to believe it has to contribute to that.

Makes total sense. I haven't done it due to WAF but I've slowly taken over the room over the years and I'm probably at the ceiling treatment point!!! 

Every room is different. Every ear is different. Every speaker is different. Nobody can answer your question. Broad brush statement is, a mix of absorption and diffusion work best. Look for a decay time around 250 or so.

@cundare2 Not exactly sure but off vertical axis response drops off pretty quick. I think its probably because of the horns that are built into the front baffles of the Anteros. 

You are right and it is even more complex than just the right balance  of reflections locations/diffusion locations/absorption locations...

The acoustic material content of the room matter, his size parameters , his geometry, his topology (windows doors apertures) and his acoustic material compositioncontent...

Without being there  it is difficult to gave advices  if we are not  a  very professional experimented acoustician...

Anyway i used non esthetical resonators and it takes me 2 years to be done with them i had experience really in one small room only ...

 The only thing i know is that any room can be tuned, i tune mine with a speaker in a corner for example near the wall  and the other not in a corner ...

Every room is different. Every ear is different. Every speaker is different. Nobody can answer your question. Broad brush statement is, a mix of absorption and diffusion work best. Look for a decay time around 250 or so.