I am certainly not as experienced as the other responses that you have but I choose the 16-85 and 70-300 both being VR lenses. With those two lens I have no gaps so to speak. When I go back and look at my landscape shots it seems that I shoot mostly between 20 to 40mm. Not sure why other than that is the composition I evidently like. I know a lot of times I don't have a choice of getting closer or backing up.