Are there any particular brands, types of steel, or steel from different parts of the world that are known for holding an edge for longer periods of time or otherwise to have really durable edges? For example, it seems like every time I read something about vintage american razors there are comments about how well they hold an edge. Anyone have experiences with these or others?

I'm beginning to think that the thickness of my beard hair is contributing to my razors dulling rather quickly. Now, I realize that there are a number of things that can contribute to this, and I am in the process of eliminating variables (technique, preparation, stropping) to try to get more life out of an edge. For the purpose of this post, however, I'm just wondering if people have experienced any different brands or types of steel that produce edges which might last longer with a coarse beard.

Thanks!