According to a top notch architectural diorama maker in USA, a student or professional who excels in art of model making can always create most stunning structures in most cost effective manner. They will know how the building will look in real life and where most savings can be made. A helpful suggestion is to learn the size and nature of project that you will be modeling. Focus on the best material that will bring out your structure in best way. For example, your model might be about showing people facade designs and interior in most detailed manner. You will need something that brings out the interiors in most real way and not something that takes away the charm.