I am assuming you are talking about the VX-I and VX-II? Below are the main feature difference:
VX-I : Magnesium Flouride len coatings and 1/4" MOA Friction Adjustments
VX-II: Magnesium Flouride coating on internal lenses and Multicoat 4 on external lenses, also 1/4" MOA Click Adjustments.
This will all change for the 2004 models.
Jon Jackoviak
The Optic Zone
www.theopticzone.com
[email protected]