[glend (Glen)]

I believe that Stephenb's comments reflect what economists refer to as 'Marginal Utility'. If you were to graph the marginal improvement in scope performance, whether resolving power or limiting magnitude, along with the $ investment required to purchase said scope you will likely notice that the 'utility' ( or what you gain) falls away significantly as the cost goes up. I agree with previous comments that from a financial investment point of view there is a 'sweet spot' where performance investment uility peaks and then falls away. Investment beyond the sweet spot maybe considered as pretentious to utility derived from the performance of the scope, but for some people the exclusivity of the investment may be more important than the result it is capable of achieving.