I did post some details within this thread about my system. You don’t have any details on your system and I’m not really interested.
I have a bass trap in the corner otherwise minimally treated room .
I’m a big fan of getting rid of reverbs so one absorption panel is on the far wall but so hard to determine what it really does in the scheme of everything else in the room. Speakers are pulled forward quite a bit and I do know this really helps.
All I’m saying is that lots of people just throw around a few acoustical panels in their rooms and because it’s a furnished room for most people I would guess most people are hard pressed to discern a difference. For those who have dedicated listening rooms that’s a whole Nother animal since furniture is minimal. If I had a decent looking diffuser panel I’ll probably put it on the damn wall. But I’ve never seen anything I really like looking at because most of them are pretty ugly and you need a lot of them.