No, HOG is still HOG. @cerich was with HOG and AFAIK designed their regulators. Deep 6 is a separate company started by him to move away from the standard business model of the industry.I have HOGs which is now, Deep Six I believe? Not sure of the value in a Venturi adijustment? Just did 12 dives with these and couldn't really tell any distinguishable difference turning the inhalation knob?
HOGs can be found new on the cheap relatively speaking. Try leisure pro or one of the other online retailers.
More info here : Deep Thoughts