I have seen these scopes up for sale at times but do not really know anything about them or the quality of them. I have been thinking of putting a straight power scope on a varmint rifle I do not shoot much and may be able to buy a 24 power FX scope. I see the Leupold BR 24 power scopes for sale at times, what is the difference between the 2 and is 1 a better buy than the other?