Which lenses would make up your choice m-frame array? I have the ballistic m-frame and currently have amber polarized, clear, and grey. The amber polarized is my favorite lens ever. It cuts light intensity while increasing contrast, making it more than suitable for a wide range of lighting conditions, and I enjoy the way polarized lenses practically eliminate glare (like on car windows.) I hear that non-polarized lenses are desirable for some applications, like cycling, because they make broken glass and other hazards more visible. The clear would only be needed in the dark, like cycling or working at night. I do like black polarized for super bright light, and for the ambiguity.