Ahh yes, the "corningware" ranges as I called them. When I moved here in 1986, the next door neighbor had a Litton one. Our houses were completed summer of 1984. The current owners replaced it with a Magic Cheff smooth top in 1998 or 1999 because the replacement parts were getting very expensive and it was getting slower and slower with the surface units heating up. Have another friend here whose house was guilt in late 1960s or very early 1970s. Has a GE cooktop version. She loves it. I visited teh Corning Works outlet store in Corning, NY Sept., 1986 and got a "seconds" 10" skillet. Was in a pile marked, "not to be used on CorningWare stoves" because it was not perfectly flat. I wish today's smooth tops would be suitable for CorningWare or Visions cookware. David, Churck, or anyone else for that matter, please explain to me why today's flat surfaces aren't suitable for glass cookware and these old styles were--what's the diff in technology.