Get stainless steel. The painted spreaders corrode from the effects of fertilizer. The abrasive action of the fertilizer is like a sandblaster down near the impeller. The paint is soon gone and then the fert rusts through the tubing. Average lifespan is about two years. At a minimum, if you have a painted steel model, cover any steel tubing within 6 inches of the impeller with about 6 layers of electrical tape. Do you live in a humid area? LOL! Actually the Scotts (now Andersen) is the Cadillac of spreaders--and priced to match. The patented helical cone is the best pattern adjustment system. Hopper is fiberglass; does not distort in the heat. Edge guard works well.