It depends of many things, but it's propably not a brand thing. Like said above, usually the thinnest point is between the intake valve pocket and the top ring land. I believe this depends of the application, how deep and large are teh valve reliefs and how high is the top ring land. We have used Icons in boosted application, it's a 400 with 4.15" stroke 440 pistons, and so far no problems. But if you plan to make big power you should use custom pistons for boosted application.