The BenQ W6000 is an extremely bright DLP projector, it has a dynamic iris to improve black levels. It also has adjustable lens shift, a real plus for a lot of people. With DLP projectors, lens shift is typically only found on more expensive models. That is something that is now changing. The zoom range of the lens, though somewhat limited, compared to many LCD and LCoS projectors is better than last years, and the combination of more zoom and lens shift, dramatically improve placement flexibility.
The W6000, like many previous BenQ projectors, definitely possesses those rich, deep, darker colors and sense of depth that DLP projectors are well regarded for.
The Epson Home Cinema 8500UB replaces the older 6500UB, and is the 3rd generation of Epson UB projectors. The Epson 8500UB is an LCD projector, and the one with the overall best black level performance (tied with it's almost identical twin the 9500UB). The Home Cnema 8500UB offers truly dazzling placement flexibility. If you can't make this one work in your room, you are probably going to have to give up, and staple a a flat panel TV to your wall instead.
In "brightest" mode, however, the Epson has some real competition this year, starting with the even brighter BenQ W6000! The Epson's picture always impresses. It's not the most natural looking, but it makes up for that with that "pop and wow" look. The purist may look elsewhere because of that, but most enthusiasts report to be, well, very enthusiastic, as numerous owners have told me just that. (Of course, purists, too, will love the Epson's black level performance.
Time to get into the head-to-head. Let me just say, whichever of these two particularly good projectors works best for you, you should end up at least really pleased.
Immediately below, a side by side comparison, the Epson image is smaller so that the two would be about equally bright: