It doesn't get much better than the BenQ W7500 in terms of a serious home theater projector that has lots of brightness - combined with a great picture. With the W7500 coming in almost exactly at 1750 lumens post calibration, that's bright.
In the 2D world that's an easy 150" diagonal screen, which few of us have room for. On paper, with a 1.3 gain screen, in theory 200" diagonal is movie theater bright enough.
There are over 400 more lumens available to the BenQ in Dynamic mode, but as that runs native lamp - it leaves much to be desired, with a heavy greenish yellow caste to the picture. Save it for the worst of lighting, since this BenQ has an already exceptionally bright picture when calibrated!
W7500 3D Brightness
Thanks to all those lumens under the hood, the W7500 can do a reasonably bright job of 3D on a 100" diagonal screen and definitely be watchable at the full size of my 1.3 gain screen which is 124" diagonal. I do wish it was a bit brighter still when I'm filling the screen in 3D, but not bad.