These are pretty good headers...not the best but good. Ive got them on my truck right now. There are "better" headers out there, but they cost about 3-4 times that amount...people say Kooks are the best and they cost over a grand if I remember correctly.
I would definitely say that if your somewhere that snows or rains alot to spend the extra monies and get the ceramic coated ones so they dont rust. But if your like me and live where it rains about 3 times a year and never snows then you can get away with the painted ones.
I've installed the ceramic coated headers and they still rusted with the first winter...3 months. My opinion, go with the cheapest if you're not going to go with Stainless...since they're going to rust sooner or later.