There's a reason quiver manufacturers build quivers with three-, four-, five-, six-, and seven-arrow capacities. That reason is options. If you're taking on elk or mule deer high in the Rockies and bow weight is a concern, and your shooting confidence is high, a lighter weight three- or four-arrow quiver is an excellent go-to. If you plan to jump in a treestand, remove your quiver, and hang it, I like a six- or seven-arrow quiver, especially if hogs are on the menu and multiple shot opportunities may arise.  The five-arrow quiver is an excellent tweener and is the choice of most bowhunters. If you're on the fence about what arrow capacity you should go with, a five-arrow is a solid choice.