Ceramic -vs- Stainless headers?

One other possible benefit to ceramic is it seems like they clean up real easy too. I know I've gotten my fair share of oil and whatnot on them when sticking my hands in the bay to fix things and they usually just wipe right off with a rag, don't need to scrub or anything. And they keep things nice and cool, almost thought cylinders weren't firing when I put a temp gun on them on intial start, lol. My Vette with black headers runs maybe 800 degrees or so on the gun, the ceramics run around 300-350, couldn't belive it.