What head gasket for boost? MLS leaking oil

Hey guys thanks for the replies.
I'm using Edelbrock aluminium heads and arp head studs torque down to the factory torque settings. I did ask for the Finish they recommend on both services.
The first time that leaked from right across the whole gasket. The second time both surfaces were machined and it was built from a Chevy shop who use these gaskets on all their engines. But they used la gaskets. That's why I was asking if the la and magnum ones are different. The second time they leaked out of the corners. They said it had never happen to them before and the only think I could do differently was to drill the rivets out and spray in between each layer.
Rather than pulling the whole engine out again and machining it all again I would rather try a better head gasket. I am pulling the aluminium heads off and putting on iron engine quest heads this week.
Maybe i should try Felpro Permatorque gaskets