Por 15, rust oleum, tractor implement paint, what to use on rusted metal

POR-15 was a good product but is old technology. I recently spoke with an ex POR-15 employee/chemist and was told that another company has taken the original formula and fixed all the things customers had complained about for years. They have fixed the fish-eye condition, the adhesion over paint problem and increased the shelf life. The new company is named "RUST BLAST".