I'm looking at the 15-45x65mm models. The Vortex and Leupold models look very similar and seem to have the same specs. I know the Leupold is made in china, I'm assuming it's the same thing as the Viper with a different outer case. Is it? My purpose for use would be spotting shots to 1000-1500 yards and possilbily packing for a hunt, but most likely just glassing an animal. Both have a good warranty, which is the better optic?