I'm hosting a movie screening soon, and I am trying to decide between two projectors. The venue currently has an Optoma GT760 projector that has a 720p resolution. My other option is to rent an InFocus IN3118HD projector that does full 1080p. The screening will probably have about 200 - 350 people and they will probably be seated about 20' - 80' away from the image. My question is, would the difference in the resolution be noticeable at these distances? I want to have the best image possible, but I also would like to save the $125 for renting a projector if I could, since it's coming out of my own pocket. The other issue is that the Optoma has a better short throw range, while I would have to put the InFocus in the middle of the seating for the best picture size. Any insight would be much appreciated!