I feel , "The Ceramic"
I just rejuvenated one from my cellar recently. I can t tell you what memories it brings back, and the smell of the that "just right", coffee, and the purculating bubbles , when its almost done.
Everyone should go back to percolating coffee. I use the stove burner, electric or gas, same results. Its in the Ceramic.
But then again we used to use a electric one , only on special occasion, with the self timer. That was equally as good. I believe it was made of some kind of Stainless.