Click to enlarge. So close.
They say a lot of projectors today are commodities. For the most part they are right, but a lot of new technology is coming out that is making that statement more and more untrue. Take for instance the Laser and LED Hybrid technology that the Casion XJ-ST155 uses to not only provide a decently bright image, but to also extend the lamp life to an incredible 20,000 hours. You do pay a premium for this technology. Expect to pay about $400 dollars more compared to similar models without the Hybrid technology.
If you're a university on a budget, and which university isn't, then not all projectors are created equal. With the average cost of a replacement lamp hovering around $250 dollars, maintenance costs should be at the top of your list of considerations. That extra $400 dollars might not look so bad in a few years. Keep in mind, if you do need to replace the Hybrid lamp it has to be done by Casio, which means loss of a projector during the repair. At this time I am not sure how long it takes to replace the lamp.