I bought this pan as a trial -- thinking that if I liked it I would buy a set of Calphalon Commercial Hard-Anodized cookware. I won't be buying more. I've only used it three times, and as far its preformance is concerned it seems fine -- the heat distribution is good, and the food came out well. However, after only three uses, it has developed an ugly hazy stain that is impossible to remove. I've followed all the cleaning instructions that came with the pan, but to no avail. The "hard-anodized" aluminum doesn't seem so hard after all.