@charles1dad and @kdude66
Thank you for your detailed and thoughtful responses. I need to push myself with educational research on the topic.
My gut response is that these issues are much bigger than just what our ears hear. I believe there is much higher end processing going on (beyond the physics of the sound wave as it enters the ear canal) and when the emotional connection aspect is introduced I would say things become oh so complicated. I believe it becomes about sensory pleasure, again beyond and certainly not limited to just one sense, in this case hearing.
For me, it is easier to accept that SETs are perceived as, or believed to be, more pleasurable to an individual (they certainly have been for me) vs being 'better' or having 'the edge' with tone / timbre. For me, the tone / timbre 'thing' remains highly elusive.