Re: VXII vs VXIII
Not all the VX-III's are 30mm tube. The VX-III has the matched index lens system where the VX-II has the Multicoat 4 lens coatings. The Matched index lens system provides for a sightly clearer and brighter image. The new VX-II's are the same as the old Vari X-III's, so they will hold up to the recoil no problem.