I have recently been purchasing a few pieces a little at a time. I absolutly love them! I have fried eggs, steaks, etc with no problems of sticking or staining? If they do stain a bit I use bars keeper and they come back looking like new.  My stove is gas and it does heat higher heat then the electric I had? I have learned if you keep burner at low med heat food cooks perfect in them. Use butter for my eggs and they slide right out.  I say good bye and good riddens of those cheap tefflan pans I had been using.  These pans bring out so much better flavor to foods.