What is better than KILZ?

What is better than KILZ? What is better than Kilz depends on specific job, as Kilz is good but other primers may outperform in certain situations. For heavy smoke, fire, pet odor, and severe water stains, many professionals consider Zinsser B-I-N shellac-based primer better than Kilz because shellac seals odors and stains more effectively and dries faster, though more expensive and strong odor during application. For general all-purpose water-based priming, Zinsser Bulls Eye 1-2-3 is often rated comparable or slightly better for adhesion on glossy surfaces and stain blocking while low odor. For new drywall, dedicated PVA drywall primers like Behr or Glidden may be cheaper and sufficient. For mold, Zinsser Mold Killing Primer is better than standard Kilz. For exterior, oil-based primers like Benjamin Moore or Sherwin-Williams exterior primers may offer better weather resistance. So better is situational, shellac-based for worst stains, Zinsser 1-2-3 for all-around water-based, and high-end brands for specific surfaces. Kilz Original remains strong for oil-based budget option, but shellac is generally considered top for severe sealing.