Header coatings, how necessary?

My buddy and I have similar engines. He had chrome plated TTIs while I have ceramic coated TTI headers. His car would get heat soaked and vapor lock when he shut it off for any amount of time. You couldn't work under his hood for about a half hour after he shut it off because of how hot it got under the hood. I have none of these problems. He didn't want to spend the money for the ceramic when he bought his headers. But last year he pulled them off and had them ceramic coated. He has no problems now.
I had cars with painted headers before and now that I see the difference with ceramic coated I would recommend it if you can afford it. As for rusting, if you talk to whoever does the ceramic coating they will offer suggestions to prevent any rust issues.