Fly Rod Selection

I just got back from a seven day trip into the Smoky Mountains, hiking some 50 odd miles, crossing 4 ridge tops and fishing 4 different creeks. If you fished one of those creeks, you essentially fished them all. This makes logical sense to me as all four streams being wild streams, and in rather close approximation, what would cause them to be any different?
The best way to describe the fishing in the Smoky Mountains would be,