Sarcher30, I cannot understand how when you say, "...great potential, but the room they were in was an echo chamber," you can also say you liked the sound in the large YG room. That room was being used by the company who did the sound treatments in the Acapella room for the demonstration of treatment's benefits. I could not stand it for more than a moment or two. On the other hand the YG small room sounded quite good.
I would agree with you about the Lansche sound, but that is it. I thought the Acapella Triolons sounded pretty good, but the amps were insufficient for the loudness they were asking of them. The image also was too big.
All of this suggests how little we all share opinions on sound. It make all of this posting seem superfluous.