I've always preferred Burris to Nikon. Guess the Nikon's and my eyesight just don't peacefully co-exist. That said, testing any scopes inside a building can yield "interesting" results. I've always tried to have an employee accompany me outside to check / test there. I do realize that some vendors (i.e. Bass Pro) likely would not comply with that wish...that's why they don't get my $.