Interesting question, and one I think is appropriate. What may sound spectacular in a demonstration may also wear on one's nerves over the long haul, for the reasons you mention. Onhwy raises good points also. I find Tyler Woodmere speakers extremely 'listenable' over a broad range of recording qualities. They are also very pleasing for long periods of listening. Even though they are "as good as what you feed into them," they have a way of remaining pleasing to the ears and emotions.
Most forgiving high end speaker 10k-20k?
Better high end speakers are typically so high in resolution that, while they sound superb with great and maybe even good recordings, they sound mediocre to plain bad with average recordings. Given that many people have average recordings that they enjoy, and would wish to be able to listen to most if not all of their music library, what speakers in the roughly $10k-20k realm (new price) would provide an extraordinary listening experience across the spectrum (average to good recordings especially)? Does such an animal exist?