I have read many posts in the forums talking about great scopes and their manufacturers. I am sure that they are all true, but my experiences have only been with Leupold. I have purchased guns two times that had malfunctioning scopes, both were Leupolds. When sent to the factory, they were both totally refurbished and sent back at no charge. I explained to them that I was not the original owner, but it made no difference. They told me that their scopes had a lifetime warranty no matter who owned them. They made a believer out of me. Glad to hear others have had good experiences with them as well.