If you are comparing scopes in a store you are wasting your time as you will probably see little difference between any of them from the best to the worst.However in low light conditions in huntingsituations the difference in lenses and coatings is obvious.I used to have leupold varixiii's mounted on all of my hunting rifles but switched to 1" swarovski 3x10x42's.They are noticeably brighter than the leupolds in low light conditions due to superior lenses and coatings.They have also proven to be just as durable as the leupolds as well.