I don't think we need to keep going in circles... I said I've heard great sounding balanced systems, it's true, but I still think it's not a requirement and adds more complexity than necessary for little to no benefit in home systems, and can have drawbacks. And while I have heard great sounding balanced systems the best are based on SET topology + efficient speakers, not massive balanced SS amps and conventional speakers.
I think a lot of it comes down to what you value in a system, for me amps like Boulder combined with middling efficiency dynamic speakers just don't have the magic more efficient speakers + SET amps provide. My goals are completely coherent sound, and an immersive soundstage that recreates the venue's acoustics.
And not that it matters, but I've had a very experienced audiophile who has owned his own audio business hear my system and hours later Boulder + Focal Grand Utopia in a newly built uber-sound-room prefer my system for exactly those reasons. As you may know by now, I don't believe technical perfection in the conventional sense is what creates seamless, immersive, believable sound. I think conventional wisdom wrt wide dispersion, the presence of short reflections, and multi-way speakers with crossovers near our most sensitive frequencies is severely lacking and partially misguided. Balanced is just another step toward technical perfection that either doesn't matter or is detrimental. Not everyone shares my tastes but quite a lot of people do.
Finally, comparisons with pro sound installations and studios are a bit ridiculous. The factors that make balanced equipment necessary in those settings generally don't exist in home systems.