I’ve got three of the VX3i - two of the 2.5x10 and one of the 4.5x14 models.
Two of them are perfect - adjustments are precise and correct, one just went back to Leopold for repair / replace after two shooting sessions. Elevation adjustment on that unit might move impact .250.....or 6.250...and might throw in about 3 inches of windage to boot.
Other two get shot every week or two and been just fine so far.