They both have their purpose. Land plane is more for finished roads. It works well with good gravel. The land plane allows a smoother finished grade due to its long platform it does not dig and rise like the box will. The box blade works well in developing rocky roads. The teeth can uproot rocks and the box will drag them out of the road. They also work well in snow. I snow blow off the front of my Kubota and scrape off the rear. The box blade also allows me to push going backwards. Either one can carry a decent grade as long as there is material to work with.