Discovery 2 4.0

Prob a very quick one for someone to answer!

Bought this D2 about 2 years back now and have replaced manifold gasket already as it was blowing, well today its gone again. I fitted the pressed tin gaskets as these were the one listed for mine, but cant help think the fibre type would be better......what say you?

Tin ones are fine if the manifolds are torqued down properly.

Peter