Prof and Eagle, I really appreciate your thoughts; you have far more experience with the products than I do (one listening session in 2012I) I would need to get intimate the products before forming a hypothesis. I will say that the Model 2 has always been more responsive and delicate due to coupling with less air. The 3 fills larger spaces and gives up some finesse to do it. The crosspoints seem to be higher on the 2.7 (no published specs that I can find.)
Jay, I don't know the sales figures, but they were small. The high-end had gone $tratospheric and the dealer network had fragmented and things were falling apart, necessitating the sale of the company . . . and the rest is history. Even in its healthy-hayday, Thiel made only a few thousand pairs of any model before upgrade-replacement.