Didn't read through the whole post on the theater section. What kind of gaming do you plan to do? Console or PC gaming? Competitive FPS vs people or casual single player gaming? Looking for 3D gaming and movies?
Reading in your attached thread you planned on a 80" $5Kbudget. With that you could really go with a dedicated movie projector and a gaming projector. But going that route depends on the type of gaming you plan to do.
Gaming projector good for consoles and PC gaming the Optoma GT750. PC gamers rave this projector as it has the least amount of input lag (Great for competitive FPS games). Also does 3D gaming very well, likely better then any 1080P 3D display. Reason for that is with current 3D displays not able to do 1080P 60fps per eye yet. So have to resort to 1080PSBS 60fps or 720P 60fps page flip. And 720 up scaled to 1080P doesn't work the greatest, native works better per the PC gamer posts.
For movie projectors hard to say unless you state what you most prefer, 3D vs 2D, deep blacks, lack of motion artifacts etc.
Here are some to look into though. Benq W7000 DLP, Epson 5010 LCD, Sony HW30 and JVC RS45. There are others too these just came to mind quick for you to look into. The JVC is said to have a great 2D image but may come at some costs so best to really read each projectors official thread in these forums.