Actually there are advantages/disadvantages to each, but of course the Benq is the better projector. The Viewsonic has better color uncalibrated, post-calibration they are ALMOST color equal except the Benq does have a more refined image and a tad cleaner. The Viewsonic has DC 3 and it does support an anamorphic lens. The Viewsonic has a superior color wheel over the Benq (Benq's 6x CW mode is useless due to noise), and the Viewsonic's bulbs cost less. I just said for casual 2D viewing I am not sure I'd spend 3x more on the Benq over the Viewsonic given the price difference, I have both PJ's right here atm. In most peoples' calibrations, the Benq does not have much better blacks than the VS, that is until they go into the service menu of the Benq. I do love the configurability and customizability of the Benq's service menu, it is very good. The biggest difference between these two projectors, is the Benq is much sharper in HTPC, and the Benq's IRIS can be used like a manual IRIS (which I found worth the difference now that I use it that way).
Post in the Pro8200 thread or read the VS calibration thread. Some of my Benq vs. Viewsonic review was preliminary and I am still A/B'n and updating. The CMS of the 8200 is not for the faint of heart, you must know how to get around its QUIRKS, it takes at least 2 hours of moving the Hue,Sat,Gain to get the gamut accurate, because there are very tough bugs in the Viewsonic CMS. We documented these issues in the VS calibration thread, as well as how to get around them. Once you figure out the quirky directional bugs of the CMS, then you should be able to get the gamut near perfect.