A great upgrade from the old cooktop (from 1979 would you believe?).  There was no simmering on the old cooktop and coming to a boil was forever.  Vast improvements with our Frigidaire and we thought the main feature was going to be the easy to clean glass surface and we get that too.  A wonderful surprise.  We are very pleased.  Should have upgraded sooner! [This review was collected as part of a promotion.]