I am considering a Pentax Gameseeker scope. I am hoping to upgrade over my Tasco World class 3-9X40. I have two WC Tasco scope both purchased in the last 5 or 6 years. The Pentax would be a 4-12X40. The Tasco scopes are not nearly as bright as others (even in the same price range). Does anyone think the Pentax will be a significant upgrade? Does anyone think it won't be? Thanks in advance for your thoughts.