Seems like you're set on getting the mac headers. Do what you think is going to work based on your experiences, but take advice from people on here though. I take it that Mac occasionally will have a bad seed or two. Just make sure you go over the headers when you receive them, and if you don't like the quality just return them. Make sure you can return the headers before buying them.
I have had the non ceramic coated headers and had no problems. They will burn away the paint and become white, but that doesn't bother me.