There is no equal to a land-plane.
I just used mine yesterday to flatten out some skidder ruts in a hay field where I had a winter logging yard.
The first pass leveled just about everything up but then once the humps are knocked down, the second pass makes it baby-bottom smooth. Only a landplane can do that because unlike a 3 point hitch item, it does no go deeper into a hole when the rear tires go into a hole, or higher when it goes up over a hump because with 3 point hitch implements, it is cantilevered out the back. Because of that arrangement, any up and down movement is EXAGGERATED. You can take some of that out with the 3 point hitch control lever, but it is hardly great.
A landplane is the exact opposite. Its blade only travels half the distance since it gets its height based off the rear tires of the tractor, and its own tires. The longer the landplane is, the more smoother the surface will be.
I did find out though that it needs tandem tires attached in walking-beam-suspension fashion on the landplane. In that way, when the tires go into a hole, the blade stays level because the axles on the landplane pivot and keeps the blade flat. It basically needs rear axles like that of a grader.