I'm tired of blowing out the plain paper header gaskets and I want to switch to something different. I was going to look at copper, then I found ou there is multi-layer steel, copper, graphite, steel, and aluminum. What to use?

Mr.Gasket ultra seal.

I have had great luck with Remflex gaskets.

I've always used regular Mr Gasket header gaskets with Ultra Copper both sides, and have never had a leak on any vehicle.

Don't ask me why, but I just bought some fancy aluminum header gaskets for my Jensen's headers... we can all have a good laugh if they leak! (at my expense, of course! )

I have blown out several sets of the Mr Gasket Ultra seals so far No more of them for me now The graphite coated ones worked okay as well as the regular white Mr Gasket ones I thank the key to making them live is to make sure the sealing surface is perfectly flat on all four sides and retighten them after warming them up for several cycles I haven't tried any of the other high tech ones yet except on a blown hemi motor

I like the regular Mr gaskets...

Flatout Gaskets Rubber Coated Copper
http://www.flatoutgaskets.com/

smear a coating on both both sides of a std exhaust gasket with silicon sealer, allow to dry before using & it will seal perfectly AND be reuseable. this low buck trick really works & if you drop your pipes at the collector flange, this gasket will probably go 5-6 reuses before you need to replace.

I really like the Percy's aluminum gaskets, they seal great and are reusable.

Another vote for percys multi layered aluminum. Never had a leak and are reuseable.

remflex.com

In the fuel & exhaust lab I use to make gaskets out
of a product called Graffoil, graphite over a stainless
mesh, very good but hard to cut. It would allow the
flange to slide as they expanded and contracted (which
happens to all headers/tubes)

Same here!

WE run Mr Gasket Ultras.Ive reused them even.Only blew out 1 and that was after 5 years and a bolt came loose.They seal unless you have a warped flange.Rocky

i'v used the grafoil type before with good results, but can't find them anymore. i now use TTI's header gaskets. been using these along time and never had a failure yet. don't know the brand name, just give TTI a call, maybe they can hook you up.

The TTI gaskets that came with my headers didn't last long...I didn't like them at all.

Fel-Pro has the best header gasket I've used.

they fixed a leaky collector flange I had problems with...

from their site...

I used, reused, reused some more Cometic MLS gaskets. They finally blew out (steel remained, the filler between didn't) after a bolt fell out of the exhaust flange. I use copper gaskets on the collectors.