Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A great investment!!!

I have been using the set now for just over a week. I have noticed that when making a cheese sauce the pans heat more evenly and the non-stick is first rate. The pans have made me enjoy the time I spend in the kitchen even more. If you want high quality 'tools' for the kitchen then Calphalon is the way to go.