3D First things first. Properly designed single chip DLP projectors do not exhibit crosstalk, an advantage they have over LCD and LCoS designs. Crosstalk, like other types of artifacts and noise bother some folks more than others. Myself, I’m “OK” with crosstalk on projectors like the Epsons and the Sonys, but that doesn’t mean I don’t notice it from time to time. I occasionally read a comment from someone, though who just can’t stand watching 3D when there’s crosstalk present. As is the case with those who can’t stand to watch DLP projectors (even ones with fast color wheels), they seem to be the small minority.
My own take is this: I truly enjoy watching 3D, but that’s in part because I find the immersion effect (something folks with small LCDTV’s like 65 inch diagonal just can't have) to be the big payback. I can easily tolerate the less than great color, perhaps some crosstalk, sometimes a bit less brightness than I prefer, and even the occasional “over the top” 3D effect. That last, either because directors can’t resist the desire, or, perhaps because the content (movie) targets kids as well as adults. The “wow, wasn’t that cool” as the bird flys between the screen and your nose, is fun once in a while, but that stuff usually detracts from the overall content.
This BenQ W7500 is an extremely bright projector capable of about 1800 lumens with a first class looking image, and over 2200 at max (color not near as good). What that translates to, is the ability to fill a respectably large screen and still have reasonable brightness in 3D. Like the Epson competition, the W7500 has acceptable brightness on my 124” diagonal screen, and might almost be considered bright in 3D on a typical 100” diagonal screen of say 1.3 gain.)
The BenQ W7500 projector, like many 3D capable projectors offers 2D to 3D conversion. I'm not a fan, myself, at least for converting movies. I have fiddled with it on football games (interesting), I've yet to find 2D-3D conversion that doesn't occasionally show some obvious artifacts.
Bottom Line, 3D (from 3D content) looks great.