Well... I have to say that I am very impressed with my DT-500 as is my wife, which is the reall telling part!
I have had this projector sitting in a box for about 9 months waiting until I finished the remodel project that would eventually yield my home theater. Well, I mounted it this last weekend and it is superb. I don't even have a proper screen to show it on and it is still fantastic. My wall currently is sort of a light reddish color. I'll be painting on a screen this weekend. My projector is ceiling mounted on a drop acousitcal ceiling. It is only about 7' from the ground and 13' away from the wall. I have an approximately 100" picture going. So I have about 15" from the bottom of the picture to the floor.
We sit almost underneath the projector and I can not even tell that it has a fan, it is that quiet to me. The picture is real nice out of the box, from what I can tell. This is my first projector and I am quite pleased with it!
Of course I bought it from the store not to be mentioned here that changed their return policy, so I paid a little more than you folks are doing now. But since I purchased it a week before the poilcy change, I do have a lifetime warranty on it.
Overall...if you are in the market for a real nice DLP projector, I would not hesitate to buy a DT-500.