What is the major difference in the layers in the differents waterless sets?
The number of layers should not be a major factor in choosing a set of waterless cookware, because the number of layers is really more about marketing strategies than quality. Whether a consumer chooses a 7, 9 or 12 layer set, they all end up being happy with their cookware. Other than the number of layers, the differences in the sets are quite minor. Unless you own an induction-top stove, it should be a simple matter of preference of the different pieces in the sets when they make their decision, because the quality is very high in the surgical stainless steel sets. If you own an induction-top stove, you will need to order a set which has carbon steel in the construction.
