Buy a White Screen if you intend to use it for cinematic conditions where there is minimal ambient light. A White Projector Screen will give you the best color reproduction and true bright whites. For dedicated home theater rooms a white screen is almost always your best choice.
Buy a Gray Screen if you intend to use it with some lights on or with moderate amounts of sunlight. The Gray Projector Screen is going to give you better black levels and increase your perceived contrast.
Both of these screen materials can be used with a 3D Projector. All of our screen materials are designed for compatibility with 3D Front Projector systems. They have excellent polarized light retention for optimized 3D image accuracy.