I am looking to find the best reasonable projector for a 159" diagonal 16:9 screen. It will be ceiling mounted, in a business setting, viewing DVDs only - no Powerpoint. So far, I have been recommended the InFocus SP5000 by a few AV vendors. Also, a Da_lite cinema screen will be used. The room size is about 30ft x 30ft. No windows. The projector, and the front row, would be at about 20ft from the screen. This is new territory for me, so any help would be appreciated, on any aspect of this setup.