Well let me tell you, I will post up my setup soon. In my “entertainment room” which was 10x16 I had my home theater setup and my stereo setup all in one. My AVR to my home theater and integrated or power amp to my stereo setup.
The new speakers I got a few months back which is my current dedicated setup are monsters. It forced me to take the bigger room we have available. Cause I can’t house everything in that room and swapping in and out a 100lb speaker is crazy difficult.
That’s the point I was getting at, anything different might be better. Doesn’t mean that it has to be more expensive. You naturally head towards more expensive as being better and that’s not always the case.
There is no perfect speaker, just like headphones, some with crazy high prices check more boxes than others but clearly there are a few things that to your ears are amazing. I’m not sure what they are for you.
I would provide one last piece of advice, is check Craigslist, Offer Up, EBay, all the used market and ask the people who are selling if they can demo before you buy. It will be free of charge and you can get idea what direction each company is going towards. Not that all manufacturers do follow a precise sound signature, there is definitely variations; even slight. You can see what’s out there.
Honestly I understand your paranoia on audio stores, but at the same time buying lets say a 2000 dollar pair of speakers and spending 300 on room treatment would be better than dropping a huge amount on one speaker.
In my opinion if you hit side wall reflection and behind speaker you will hit the same performance as many crazy treated room. It does clearly depend on your room but that will cover a lot of bases and isn’t expensive.