As far as the BenQ W7500 projector's placement flexibility is concerned, it's at least very good. It should work in most setups. The 1.5:1 zoom is a good amount of range, but some competitors have up to 2.1:1.
What that means to you, is that this BenQ can't be placed quite as close to any given sized screen, as the most flexible, nor can it sit as far back, from that same screen as the best. Many projectors let you place in the 9.5 to 10.5 feet as the closest for a 100" diagonal screen. The BenQ is almost 12 feet back, or as far as 17 feet and change, bus those with maximum going as much as 21 feet back - same screen size.
Picture Quality - Color, Black Levels, Transparency
Rich saturated look to the picture. Color, post calibration looks darn good, but it's not as close to dead on as some others. We're quibbling among fanatics. Awesome works as a good description of how the W7500's picture could be described by more "normal" folks. You know, the people who are happy with the pictures on their LCDTV, that they've never adjusted.
Black level performance is one area that could stand a little improvement, the BenQ does a nice job - "ultra-high contrast", but the best of the competition can do a noticeably blacker black. Considering how bright this projector is, that also means the "blacks" are a lot brighter, so more noticeable on the darkest scenes.
Watching some Olympics on the W7500 was most enjoyable. The sharpness of the image really shows on that bright digital content. Count sharpness as a real strength. I mostly left Detail Enhancement at it's default setting of 1, which provides a subtle change. Even at 1, I shot side by sides with the Epson UB's Super-Resolution at 2, vs. the W7500's at 1. I'll give the edge to the BenQ. Both look very nicely crisp, but the W7500 looks more so.