I have 11 Leupolds along with a couple of other brands. The Leupolds have all held up over the years without any issues. I do know that Leupold will back their products like few other companies. They will fix it free of charge if it really is a scope issue. I once purchase a used VX11 at a gun show that had been fairly well abused. I call the factory and asked about the warranty and explained I had purchased it used. The guy replied "we made it didn't we?" You can buy more expensive scopes but I doubt they will be more durable or better supported by the maker.
