Bakeware gets less attention than stovetop cookware, but a warped sheet pan ruins cookies just as effectively as a bad skillet ruins eggs. The difference between a $12 sheet pan and a $30 one is whether it stays flat after six months of 425 degree sessions.
These reviews focus on the construction details that prevent warping. Material gauge, rim reinforcement, and aluminum alloy choice are the three factors most brands never mention. If you have ever heard that loud pop from a sheet pan buckling in the oven, the guide here explains exactly why it happened and what to buy instead.
