The debate over projectors V interactive touch screens continues. Consider these facts first , projectors use less power , they weight 1/10 of the weight and are 1/3 of the cost. The other great feature of a projector is the bonus whiteboard, which allows anyone to teach. Once you get locked into a Interactive touch screen you would want to get at least 15 years out of the device. This means as technology changes you will be left with old technology. So think carefully before going with the herd.