Dear Lewm,
yes, the 5 way horns changed a lot and improved the listening quality. In the last days I was frequently asked why I am offering my Micro SX 8000 II, my love baby - by which my real passion with analogue audio started. It is very simple: I am running out of space in "my small room". It is not a matter of drive technology at all. I have three big TTs left, two are belt driven ones, one is another SX 8000.
When you are following the discussion about the TechDas, also a belt driven concept, one might get the impression that regarding the price there are three times more people getting a stake than it used to be some 25 years ago when the original design entered the audio world.