The first set of stainless steel pans I owned had a disk bottom. I was frustrated when trying to follow recipes because the temperature was difficult to control and not very even. I have a small All-Clad pan that I used briefly to cook some eggs a few months ago and found that they didn’t stick. The heating was really even and they came out great. So I went and got the 10-inch pan and have been so pleased. I am able to follow the recipes and they turn out just the way they should. The heating is even and uniform and the pan is even lighter than my other ones. I am so glad that I decided to upgrade! The pan is well-balanced, easy to use, easy to wash, and performs great! I will be using this daily for years to come!