after I had bought the "BenQ TH681", in which, however, occurred the rainbow effect, I decided for this. Overall, I am extremely satisfied: He is responsible for our room bright enough and not too noisy. The alignment options have blown away. One can be inclined to project the projector properly from the side and still set so that a wonderful "straight" image. The only drawback: There are no wires on the image supplied inputs, ie no VGA or HDMI cable ...