I wasn't to impressed with these pans. To me they worked just as well as any other brand on the market with the same features. I decided to do an experiment to see how it would cook using no spray and using spray. I used both pans on my stovetop and in my oven side by side cooking the same dish. On the stovetop I decided to cook fried eggs to test the nonstick ability and I wasn't impressed. In the oven I choose a frittata and there was noticable uneven cooking. I will continue to use them and see if I get different results but until then I'm definitely not switching from my regular pans.