We love the copper core pan.  We have a set of non stick all clad that we loved.  Unfortunately, over the course of several family visits, some generous and eager to help family members scrubbed our pans multiple times rendering them all stick pans.  Rather than buying several, we wanted to start with the 12 inch and give it a trial run.  We have used it daily over the last few weeks and LOVE it.  5 stars.