I purchased a set very similar to this at Cosco a couple of years ago. I've been thrilled with how well they perform. I LIKE the fact that they're heavy and very substantial. They hold and distribute heat extremely well. The space saving design is well engineered. Only one small complaint. I did something stupid and shattered one of the lids. I can't find a replacement here, or anywhere. I know Calphalon offers SOME of the lids as individual pieces, but not all of them. I hope that changes. I don't want to purchase a plain "normal" style lid with a knob in the middle of it.