I did some reading and the 7200 is for business but the 7800 is for HT. Here is some info from the BenQ site:
Cinema Quality in the Comfort of your Home
Armed with the Matterhorn DLP™ chipset, the BenQ PE7800 is a perfect fit for today's demanding home theater owner. Designed around the Matterhorn DLP™ chipset, this masterpiece can uniformly reproduce the brightest image under a wide range of lighting conditions. At a native 16:9 resolution, the PE7800 projects its images in true cinematic proportions. With a 2000:1 contrast ratio and black levels, the PE7800 delivers lifelike color reproduction in almost any room.
Project the brilliance of the BenQ PE7800 into your home, and let our family entertain yours.
Key Features
DLP™, Matterhorn Chipset
Native 16:9 resolution
800 ANSI Lumens
2000:1 Contrast ratio
EDTV, SDTV, HDTV Compatible
32dB Whisper quiet
Sharper, clearer moving pictures
3-2 pull down recovery
PIP/POP Function
Superb rich color saturation (Six segment color wheel)
