There are a lot of projectors on the market, and trying to figure out which ones are the best buys can be daunting. Once this information is obtained, append the qualifications to meet certain criteria so as to narrow the search. For me, a display device should exhibit particular qualities to even be worthy of consideration. At the very least, a projector must provide a sharp image with excellent picture geometry. It should have the ability to deliver a good grayscale.
Light output is less important, but only when the ideal viewing environment can be maintained.
Of course, the price rises with this capability, but not so much as in recent years. In fact, many mid-range projectors now come with some form of line doubler or scaler. Most multiscan projectors today automatically sync to the incoming video signal rate. With the wide choice of source signals available, it is a must that any projector selected should do this. The point here is that the less setup a homeowner has to do to view a program or movie the better satisfied he will be.