I agree with you regarding Dennis Zander of Z-Stuff. He stands behind his product and is always willing to discuss issues.
The 40+ switches on my layout were about half NJ INternational switch motors and half Z1000, all controlled by toggles. The NJI machines need heavy wire as they draw a lot of current, the Z1000 can use fine wire as their draw is small. I started adding signal lights at the toggles, and then decided it would be easier to use the Z controllers and replace key NJI motors with Z1000. Submini toggles are fine for the Z1000, if you elect not to use the Z-stuff controllers.