Ouch! I am pondering the thought of a projector? How dark does a room need to be, as my new theater room is my den which opens into the kitchen, the dining room and the living room. It will also have a french door patio exit. I know that at least in the past, that this has been a big limitation of a projector vs a display. Are they noisy? What does it cost to get a quality one? Thanks
BMW
Dark is key for ideal cinematic experience, but this is true for any kind of display- it's just extremely important for projectors. I do not recommend it in this case, I think, but since you really never once mentioned a budget here, all I will say is that you can check out Screen Innovations Black Diamond screen, and possibly the Dalite High Power, but I don't think so on the second one. Google the SI BD, but I have to guess that it's too much. I'll leave the research up to you at this point.
edit: I did a quick google for you, check out some videos on the SI
http://www.google.com/search?client...&ved=0CEkQqwQ&bav=on.1,or.&fp=5554087cfc08a05
edit #2: don't listen to marketing speak, this is still* a compromise for lack of light control. For best performance, you simply need light control. Just FYI and you've been warned.
Noise is essentially a non issue. DLPs are generally the loudest, and the brightest. The brighter, the noisier. I think LCD or LCOS PJs are pretty much all below 20 db/m now, or something like that. If far enough of from you, or high enough from you, and that the vents aren't pointed directly at your ears, really not a concern IMO.
A quality one is roughly 2-2.5k IMO. However, I don't think you'll be happy with a PJ.
Again, you never mentioned a budget, and I'm nearly certain it will be beyond yours, but you might look into rear projection if you have the space behind the screen wall. That area would need to be blacked out completely, and you can use a mirror system to get the "throw length" to be adequate, but when done really right with the $$$$$$ to back it, you can have something like this: