Best way to export from Blender 2.57 to the UDK?

What’s the best way to export static meshes from Blender 2.57 to the UDK?

I can successfully export as .dae, .fbx, or .ase. Is one better than the others? If so, why?

I’m creating my first 3D game in the UDK, using Blender to create meshes and animations. The objects are mostly simple and blocky, and the collision that the UDK provides is fine. My goal isn’t to create a visually spectacular game but to learn the whole game-development process and make a simple game.