Bought one of these on clearance from Sports Authority 10 years or so ago for $125 or so, down from $190 or so if memory serves me. Looking through the glass then, seemed like a decent deal. Would it be a waste of time to put on one of my backup rifles? At the time looked about like a Nikon Prostaff or Burris Fullfield II which I have on a rifle. Sm I wrong, right or totally off?