The DLP is great, disadvantage is there is an optimum viewing distance, too close and the picture is Ok, on my 50 inch about 10ft is perfect, closer and the picture is not stunning, but OK. 10 ft and out it is spetacular.
As for the bulb, well Samsung has launched LED on their DLP, but of course the cost is rediculous. You can find a 46 inch Samsung for 1500 or less. If you take consumers report or go to Library they have info on all projection sets (DLP and LCD) I like my Samsung, but Viewing angles is also a consideration. From the sides of the viewing angles, quality also decreases. Great set otherwise.