Roe,
... dictated by the presence of a finite budget.
So if you had to reduce your inventory to one or two bins, which would stay?
one High Grade 7/8x42 plus one 20x60S (stabilized)
If I had to sell one of the two - perhaps because of an arising need of a set of new winter tires (;-)) - it was the 20x,
which leaves me the 7/8x42.