Summary: I bought this from a Best Buy outlet about 4-5 weeks ago and I have no regrets thus far! I use it for personal stuff at home (movies, fifa, etc.) and in my office for presentations, etc. I can even lease it to my customers for small meetings and acquire a return on the investment with ease! At first I hesitated to purchase it as I was more interested and comfortable with the Epson brand.
Summary: I contacted Vivitek twice with questions -- the second time because the projector had stopped working after four years and I wanted to know where to get it fixed. Both times, I got no response. The projector was pretty good and four years is not an unreasonably short lifetime, but I would not buy Vivitek -- if there were any sort of problem, Vivitek would not stand behind it.
Summary: biggest bang for the buck... I've had it for a few days watched a few different movies and tv show on it and they all look great. I havent been able to sent up my screen yet so ive been using it on a bare wall ant the image quality is still great. I was also suprised how good the image is with lots of ambient light.