I am currently using an Optoma EP 739 and am looking to upgrade to a 1080p projector. The projector is 19' 6" - 19' 8" from a 1.0 gain screen. Currently it is projecting a ~135" image, with a length of ~120" and a height of ~60".
I've had my eyes on the Panasonic PT AE4000U for a very long time now, but recently I noticed that the projection calculator on projector central had been adjusted, and thus the only way for me to get a decent image would be using a 1.2 gain screen with no zoom, producing a 100" image. While this seems suitable, it would be a large downgrade, and I am willing to sacrifice image quality for the sake of size. The same problem occurs with the HC3800, which also requires a 1.2 gain screen to get a good image, but it would be larger at 136".
I was wondering which projector of the ones I've listed (HD20, W1000, and the H1080FD) would be best at the distance I will be projecting from, and at the size. I know that the projector central calculator lists them at pretty much equal, but I doubt those are accurate lumens numbers and I was wondering if anyone had accurate figures. So basically, which projector would you choose for producing at least a ~135" diagonal image from a distance of nearly 20 feet, on a 1.0 gain screen. I read the other forums and they seem to be mixed, with some favoring the hd20, and others the benq, and so on. Also, the projector central reviewers preferred the hd20 but i noticed most posters did not.