Ever wonder why the screen navigates the way it does? Put your cursor where you want the action to happen. If you have one model in the foreground and another in the background, put your cursor over the one you want to spin & then orbit. If you are shrinking/expanding the view, you can travel through your scene by putting the cursor on the side you want to move away from. Shrink, then move to the opposite side to expand the view. Since everything moves around the cursor, you will move from one side of your scene to the other.
I work on a Macbook with a scrolling touchpad, so I can always shrink and expand my view easily, no matter what tool is up. This lets me get around without changing to a viewing tool.