Personally I will only buy aluminum, but if you ares shopping steel, when replying for adds, insist on good detailed pictures of the frame at the back door/ ramp area. This is the area that tends to rust out first. COurse that maynot be true in a slant load. Id think Id want detailed good picture of area where the horses back ends usually are. Before making the drive. Seems all the adds say no rust, or good shape, till you get there. SOme of the lower price stocky looking 3 horse bumper pulls are terrible, they will rust driving off the lot new.