"The Ultra High-End Speaker."

If you cannot perceive that the so-called "high end" speakers are better than yours, then you have probably crushed the competition.

My system is much less than yours. I think it sounds wonderful, even compared to more expensive systems. Often, they do things that my system cannot do -- bass and dynamic punch, super accurate sound staging. I've got my system doing something better, in some cases, than those systems -- intimacy in midrange, naturalness of soundstage, precision without hyper-articulation in instruments and highs.

I have heard a couple systems that do everything mine does plus the things it doesn't do. But they're not ultra-high-end. They are thoughtfully selected, matched, and placed in an intelligently treated room.

I'm with @baylinor 

Everything matters is the short answer as always. But to over amplify the importance of one aspect of audiophilia over another is not a fruitful argument imo.

Too often these threads overemphasize the room (by people who can't or won't buy better gear) or the gear (by people who can't or won't pay attention to their room).

It seems painfully obvious that a good room with good gear is good, and a great room with great gear is better. 

All of that is "personal" taste, but really -- good is only good and better is better. And if you can't hear the difference, it's you -- not the room or the gear.

@baylinor Thank you! I almost went down a rabbit hole with cables and power conditioning before reading a bit more. I realized that they were not the weak links and probably would not make a very big difference. Diffusion improvement was the better expenditure (with lots of measurements) and also continuing to focus on source. I improved my streamer and DAC. Updated the photo, here.