The purchase of an LCD projector must be carefully thought through. Therefore, it is important to take the time to determine how you plan to use a projector and in what circumstances it will be used. These projectors would work in very large rooms such as auditoriums, where there is poor light control. However, these units tend to be the more expensive.
Weight is another important consideration.
Less weigh also tends to increase the price of a unit especially if the unit also has high lumens. Units that have lower lumens but are not as expensive, generally are a good compromise. On the list below the DXs appear to balance lumens with price although they have a manual zoom. If you need to choose between a projector with higher lumens or auto zoom, pick the projector with the higher lumens. Finally, it is important to protect your investment.