ceramic wont rust but they will crack over a period of time atleast thats what happened to my DC Sport header I have on my Integra. As far as pros and cons of each ceramic looks better over the long haul stainless will change colors, stainless headers produce more heat than the ceramic but the stainless are more durable and should last a very long time so as far as to which one to get just get a quality name brand remember you get what you pay for hope this helps.