It's the Sanyo PLV-Z5. Came highly recommended by quite a few people, and I like it a lot. The best feature is there's a door which covers the lens and stuff and it's motorized. Keeps the lens clean and no need to climb on furniture to put the lens cap on.
Centre channel is high because the screen is going to sit fairly low.. middle of the screen at about eye height sitting down and the screen is 48 inches high or so. Plus I prefer the sound coming from above than below. I wired in a wire so I can put the centre channel below if I want, or even have two. Some people use two so the sound comes from the centre of the screen.
For light, will have to get blackout blinds at the very least, and probably drapes that have blackout fabric in them. During the day I can hardly see the projector image at all; it's very bright down there!