Im looking at buying a Leupold VX2 4-12x50 Canadian with the Cds dial. I have never bought any Leupold scope other then a VX3. Are the VX2 s worth the money? What is the real difference between the VX2 and VX3. Are they as tough as the VX3? Who has one and what are your experiences with Leupold VX2 scopes?