Ok. First the Teres is available as an assembled TT, so it is a "retail commercial product", as well as a DIY product, depending upon how you want to buy it. The Redpoint is made by some of the early Teres participants, and their intention was to "take it a step further". I have not heard the Redpoint TestaRossa, so I cannot say if they have done that, sonically. In fact, I cannot even say with certainty, that they are even on par with Teres. When the changes are as radical as the Redpoint, it can no longer be considered an "offshoot" product. It is its own design, and I'm not entirely certain that it is an improvement. I think these guys at Redpoint are good guys, and their product needs to be judged on its own merits. I am not one of the fans of their styling. On the tape-drive issue, this has been experimented with at Teres and at Walker, and both designers felt that a silk string drive was best. All I can say is that changing something does not necessarily make it better. It could be better, the same, or worse. I am disappointed that the Redpoint demonstration did not allow the sound to be related in the best fashion. I'm sure this was a disappointment for Bwhite, and for Redpoint as well. Every mfr. wants his product demonstrated in the best light, but this is not always possible.