Like someone has already said, it does depend on how many wrench sets you have and what you're using for storage. For me it's all about being able to find exactly what I need in the least amount of time and minimizing wasted space.
I have a lot of wrenches. I keep them in my roll-around tool cabinet with my other tools. One drawer for metric, one for standard, one for over-sized, I keep my small and medium length wrenches in silverware sorters which keeps them organized, on their side and tightly packed. I cut out one end of the silverware trays for extra-long combination wrenches and regular length 11/16" to 7/8". 15/16" to 1-1/2" go in the over-sized drawer.
It sounds strange, but it works like a charm. Walmart or the Dollar stores are the place to look for them.