ditto about the king kutter disc. they are about good for covering seed and not breaking new ground.I am gonna buy the biologic disc as it weighs about 500 lbs which is the same amount as my king cutter after I load the baskets I had built for it down with rocks. the king kutter also doesn't have adjustable gain on the blades like the biologic does which can make it easier to break ground if you have more aggressive blades. does anyone have a biologic disc, not the smaller one.