I haven’t seen modern projectors, but I know my 55 LED LCD is extremely bright. I just don’t think you’ll get the image quality with a projector. I’m under the impression that any extraneous light in the room is a problem for a projector, but all I know about is what I have.
False and true. 1080p projectors are pretty commonplace now. Overall quality is a function of both the projector AND the screen.
Projectors are KILLED by outside light. A projector cannot project 'Black'. Any color but 'black' - so what they do is project every other color so bright - that an absence of this projection 'appears' black. Easy demonstration - make a shadow during a movie over a dark scene - you will easily see your shadow - so outside light really messes with the picture.
But, if you have a basement, or have a window-less room; you will get a great picture on a Projector, at a price that flat-panels can't begin to touch. You just can't buy a 100+ inch LCD/Plasma TV - they don't make them. And if they did, they would cost a lot more than $2,500.