Learsfool, I respect that you have a different perspective. Sometimes the vocabulary is itself in doubt and it becomes hard to communicate what I am hearing.
"Have you ever tried moving your Cornwalls off the wall a little?"
A careful reading of my first post in the thread will tell you that I do not own Cornwalls, but Fortes, which are designed to be in room, as they have a passive radiator on the back. This should also answer Hi hifi's question as in my second post in the thread I mention that the Forte, Forte 2, Chorus 2 and Quartet are less sensitive than the Cornwalls and are not as amenable to the use of SE amps due to this lower sensitivity. That said I was recently playing with a 2 watt 6B4G amp, but for my large room and preferred high SPLs, I like a push-pull EL34s or sometimes even EL84s.
I listen to a friend's LaScalas with regularity, and they are much more friendly to SET amplification. The one fly in the ointment is that the higher the sensitivity, the more you will hear the steady state upstream noise in your system. Some prefer AC heaters which can be a bit noisy, as well. But we all seem to settle on the combination of noise, drive and sound quality that we can live with. Like picking a comfortable pair of shoes, this is a personal matter and those that need to call something "best", well more power to them. I'm happy to stick with "favorite".
Yes, rooms are very unpredictable, and your Cornwalls may sound better into the room, but it seems worth a try to see if using them agains the wall or in a corner actually helps. In a sense corner or wall/floor placement does actually horn load the bass radiator in these systems.