Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Four months later, and I have to buy a new pan!

I hated this pan. It did not wash easily at all, and my muffins got stuck every time. I read: "...pop out easily...."....well, not for me, apparently. Washing the pan in the dishwasher just produced brown stains which could then not be removed by hand. In short, here it is, just four months later, and I've had to junk this pan and purchase a new one. I paid more for my Pyrex muffin pan, but now the muffins DO actually pop out easily!