After reading the reviews I purchased these pans after I had purchased another brand - which was also a disaster - and these were just as bad as the other brand. The pans were not commercial quality but heavy duty household quality at best. I have purchased heavier baking pans from department stores than these so call commercial quality pans. The bottoms were warped leaked all over the place after they heated up and I spent more time cleaning the oven than making the batter. I would not recommend these or the other brand for cheesecake baking. DON'T WASTE YOUR MONEY.