Hmmmmmmmm, the optics in both scopes should be excellent. But not sure about the illuminated model due to possible problems with the switch on it. I write this because of a very similiar Nitrex illuminated model that seemed to have a problem. Whether its true for the Weaver label, I really don't know. Nitrex is a discontinued line that was also owned by same company that owns Weaver, with both brands made by same Japanese company. When remaining Nitrex inventory was sold by Natchez Shooters Supply, only complaints about the brand by its buyers was the switch on the illuminated scope model.
By the way, you might want to google the Weaver model your'e interested in and check for a lower price. Type in Weaver and its model number or 3-15x42 super slam for sale. Should find a number of internets sellers and you can compare prices. Do believe you can find it for a much lower price elsewhere for well under $400.....also might be a $50 weaver rebate on them.