Suggestions are tough with a number of good projectors, each with its strengths and weaknesses.
However, I strongly encourage you to go 1080p and with a projector that will do 24 frames as well, 60 frames being standard. With a large screen I am sure you are considering to project, at least 100" wide
, forget 720p, even if you don't buy into one format or the other right now. By the winter season, there will be another interesting dual format player out on the market. Hi def is really stunning on large screens.