There is a balance of features that determine whether a conventional video projector or an LED pixel display is the best choice for commercial and church environments. Projectors are dropping in price, making them the better option for rooms with well controlled ambient light. However, LED displays are bright enough that they will perform vibrantly in the brightest of rooms. With a ten year lifespan, the higher initial cost of an LED display is offset by not needing to replace lamps until hitting the 5 year useful life of a projector.
Another issue is the lack of mounting locations for projectors, especially in older churches. We can help you sort of the details to make the most advantageous decision between the choices available.