You will use a spotting scope only a fraction of time as much as you will use your binoculars. But, when you need to look at birds and other objects that are really far away, there is no substitute for a great spotting scope. Birds like ducks, eagles and shorebirds are famous for only being visible at a distance. Your binoculars are rarely strong enough to view these species effectively enough to get a proper identification. Another great benefit of owning a high quality spotting scope is they are great for looking at the stars and planets. I love getting my scope out when Saturn is up to get a glimpse of its rings.