When choosing a projector you shall consider 4 major elements i.e. brightness, resolution, aspect ratio and types of technology a projector use. ANSI lumen is a unit for measuring brightness. Projectors with 2000 lumens and below is designed for a smaller and controlled environment. A projector has bigger lumens means a bigger image or screen that it may project to. A higher resolution projector will give you better picture quality. A 1920 x 1080 is high definition and it is ideal for home theater application. Aspect ratio of 4:3 is designed for business use and widescreen or 16:9 is for home theater and DVD projection. DLP and LCD are the two main types of technology adopted by projectors. There is a new and better technology of LCOS available but it will certainly cost you more. Vuugo is representing Acer, Asus, BenQ, InFocus, Toshiba, sony, Viewsonic, 3M and Canon.