Can anyone clarify whether these quickchange tooling systems are all compatible and follow the same scheme as Tormach? They all look pretty similar, at least.

Tormach, of course:
http://www.tormach.com/Product_TTS2.html

Novakon's offering:
http://www.novakon.net/quick_change_tooling.html

Smithy's offering:
http://www.smithy.com/accessories.ph...aid=1014&code=
Smithy claims "Tool holders are designed to "bottom out" on the face of the R8 collet, giving you a fixed height each time." This sounds distinctly different than TTS.

Tormach's scheme:



thanks,
Steve