In the sample to the right, you'll see dnp's comparison of the two Supernova surfaces to matte white (in the middle).
The 23-23 surface* at the top provides 230% more reflectivity than matte white while effectively absorbing ambient light. It's ideal for low-brightness home theater projectors, active shutter 3D applications, or for situations with strong side light from windows or lamps.
The 08-85 surface has a gain of 0.8, 20% less bright than matte white, but it has 70% more contrast than matte white, providing richer, deeper blacks and shadow detail even in high ambient light situations. It has an 85-degree half-gain angle, yielding practically a 180-degree viewing cone with no loss in brightness or color fidelity.