Don't have a Simmons Aetec scope, but do own the aspherical lens Federal Intensity scope that is similar to the Aetecs. Rather good clarity and brightness with the aspherical lens. My fellow shooters at range, who own a lot more expensive scopes than my Intensity scope, were very impressed with it. Matter of fact, one of them bought one recently and he is rather discriminating when it comes to scopes, preferring Leopolds, Nikons and such. Natchez Shooters Supply, handles both Aetecs and Intensity scopes, but not sure what Intensity scopes that are aspherical lens type they still have in stock.