Phoenix just to clear the air Im not against you or your product either. I have not heard it yet. I think it looks like a well-made fairly priced product. But I am leery given the premise of the whole thing. To me it's theoretically better to hold a constant speed, or attempt to, then to have an ever-changing, corrected speed. I realize neither one is perfect though so they both may work equally well in practice. I think all the concern over belt creep is way overblownjust to sell us poor saps something else. But that is audio in a nutshell. And as S Bank said you really should identify yourself as has been brought to your attention before.
Regarding the TNT ET Combo the op is after I think he is on the right track. My table came with the 12 inch arm and I sold it and bought an ET and pocketed some money. The ET far outpreforms the 12 inch arms as well as 95% of the other arms on the planet. The ET is stupid performance for the money. Where are you lady you should be somewhat mechanically inclined and willing to fiddle. That does not mean it goes out of adjustment as some people think I just mean in the learning phase you have to play around with it.