Is Zinsser the best primer?

Zinsser is widely considered one of the best primer brands by professional painters and DIYers, but whether it is the absolute best depends on application, surface, and budget. Zinsser, owned by Rust-Oleum, offers several highly regarded primers including Zinsser Bulls Eye 1-2-3 water-based primer, which is versatile for drywall, wood, and previously painted surfaces, Zinsser Cover Stain oil-based primer excellent for severe stains, smoke, and water damage, and Zinsser BIN shellac-based primer, which is considered the gold standard for blocking severe odors, pet stains, nicotine, and knot bleeding. Many professionals consider BIN the best primer for tough stain blocking and odor sealing, as it dries quickly and adheres to almost any surface including glossy surfaces without sanding. Compared to Kilz, Glidden, and Behr primers, Zinsser typically offers better adhesion, stain blocking, and mold resistance. Consumer Reports and professional painter forums often rank Zinsser Bulls Eye 1-2-3 as top all-purpose water-based primer. However, best primer is situational: for new drywall, PVA primer may be cheaper and adequate, for exterior wood, oil-based may be better, and for smoke damage, shellac-based is best. Zinsser is more expensive at 25 to 45 dollars per quart, but saves time by reducing topcoats. So while not always cheapest, Zinsser is often considered best overall primer brand for versatility and performance.