It depends on what you are trying to do. It is an easier and less expensive method of producing a holographic type illusion. Correctly used, is very effective and certainly very believable as a hologram effect. It might be argued that the reflected image generated by the Pepper's Ghost system is of better quality closer up, but from a distance we think it’s as good, and for a given projector, the image is brighter. However, don’t take our word for it. Please come and see a demo of both techniques and then make up your own mind.