Thank you! This makes a lot of sense to me. For some reason I though it is "better to have a set all being the same grade. The financial metric is helpful as well. Looks like you are finding coins that are rare, but not so rare that the price begins rising exponentially.
Thank you for your response.
I agree the collection does really have an impact on what grade one could collect, I completely agree.
I like the idea of completeness as well, if I were to go off my notion that everything should match... then your example shows my anxiety.