Applied on heavy rust, converted well after one coat (two where rust was thick). No smell, easy to apply, surface was ready for painting quickly. Solid product.
Gave me a smooth, even base on patched drywall and bare wood. The finish paint went on clean and consistent.
Worked great on interior drywall, but in a colder room it took longer to dry between coats. Once dry, the topcoat looked perfect.
For the price, this primer performs really well. Consistent coverage and strong adhesion on both old and new surfaces.