@carlsbad - thanks for the advice. And thanks to everyone for telling their story.
It would be interesting to try and match your measured hearing abilities to a speakers measurements. Understand where your limits of hearing and often exaggerated frequency distortions can be matched relative to a response of a speaker. More like fitting a shoe to a foot rather than one size fits all approach. This is what we all try and accomplish but in a very un-scientific manner. It could help focus the search for the optimal sound.
And I wonder if those of us with hearing loss and other issues gravitate towards a certain type of speaker (horn loaded, soft dome, planar) or amp (Tube, Class A, AB, D)?