Have had a set of some cheap auto parts store (Doug Thorley/Headman?) headers on my truck for 15+ years without any leaks, and I think it is because I cut the flange between the ports and used copper gaskets.
Heck, I even got an extra set of headers just in case, but haven't had to use them yet.
My engine is set way back on 6 cylinder brackets (still clears HEI) with no problems whatsoever.
I like the fact that headers are lighter than cast iron manifolds and IMHO...
...antlers look better than horns anyway!