I'm solidly in the box blade camp, however, I would like to know what tractor you intend to use. I have a BX-25D, and I use a five foot box blade. It's too big for the tractor sometimes, but I also have a Ford 9N, so if I need to have the rippers down then I'll use the Ford. With it on the Kubota it sticks out well past the tires on both sides, so I can finish grade along the pond, or near a stone wall, where I couldn't get so close with the larger tractor. There is a learning curve, as with most tools. I've never used a land plane, so I can't disagree with the other folks who have suggested them.
Jerry