I have an old Vari-X III with friction adjustments, not the brightest in the world with its basic lens coatings but it is clear and reliable.

The VX-II isn't quite a Vari-X III in a different package, though it is close. The lens system of the Vari-X III is a newer design and is optically superior. Whether or not the difference is enough to be of any consequence is a different matter.