I just got back from another demo of the Treos at a different dealer. The first demo that I mentioned in my OP was sort of slapped together by my local dealer. The speakers were walked into an approximate triangle, Kinber 8TC hooked up as a bi-wire and tied to an integrated tube amp of unknown power rating - "I don't know". Hmmm. Today was much different - with different results. I had emailed Randy at Optimal Enchantment in Santa Monica that I might be stopping by about noon the next day (today) and that I was interested in the Treos. When I arrived there they were, already set up, wired up and the gear warmed up with Diana Krall on a Basis/Lyra Atlas combo, ARC REF2 phono and Ref5 (SE ?, I didn't notice), Audio quest IC's and SC and ARC REF 150's I believe. Randy was knowledgeable, friendly and accommodating. I give him five out of five stars.
So how many stars did the Treo earn in this new configuration? Hint: not 5. True, the top end sizzle was completely absent, as in gone. Not tipped up at all. Star for the Treo.
The midrange was a treat. Clean, clear and focussed like my 3A Sigs just can't by comparison. Female vocals were really well done. Piano, check. imaging, check. Three more stars for the Treo.
The bass. The bass (shakes head) - A deal killer for me. Sometimes ok, sometimes not. But when it was not, it could be really distracting. Thump, Thump. Definitely do a demo with your music preference before making a decision because YMMV. Add no stars.
Now I'm stepping aside and let the thread live or die on its own. I've got my answer. Thanks to all you who participated. It's been a blast!