What to paint headers with?

I used Rustoleum grill paint, many light coats. Took a map gas torch to them and it didn't affect the paint at all.
It lasted for many years.

They started to show signs of rust last year, so I had them blasted and ceramic coated locally. Showing signs of rust already.
Ordered a set of TTI headers for another car and paid the extra to have TTI coat them.

On the cheap, I would use the Rustoleum again, and remove and reapply every few years. Otherwise, order coated and forget about them.