I'm not sure what to say. A 40' wide image can be hit from the aforementioned Sanyo, to fill the width, using their LNS-W31A, Short Zoom Lens. It allows for the 40' wide image to be hit from 51' to 73'2".
But, it measures only 2 lumens per square foot at that size and that setup. That's incredibly dim if it is indeed filling the full width. Also an issue as the screen likely is not a 4:3 aspect ratio, but more likely 16:9 or 2.35, so much of the light is falling off the edge of the screen (33%).
The screen size called for with that projector is 30'x40', which is 1,200 square feet it is trying to illuminate, which is huge. Commercial projectors run about $80,000 or more to deliver those 12 lumens or so that actually end up on screen.
I'm not sure of your budget, but I would strictly limit the search to LCD projectors and widescreen projectors so that the lumens that come out of the projector actually fall on screen.
The Canon is a decent model and will deliver a fair bit more light on the screen since it's natively widescreen.
If you weren't unhappy with the resolution/detail you were seeing before, then spending more for more resolution makes a lot less sense then spending more for added brightness. 1920x1200 won't fix your lumen issue.
I would lean towards the brighter Panasonic models which are more affordable...
With the ET-DLE150 lens, can throw a 40' wide image from 63' lens to screen. (56' to 80' actually).
Realistically, this size of screen is traditionally handled by 15,000 to 20,000 lumen projectors. If you are using it once a week, and intend to continue to do so for at least two years, then spending $10,000 on a projector isn't unreasonable, but I would focus on brightness first.
This is my search list that I am (kind of) using...http://www.projectorcentral.com/projectors.cfm?g=1&hide=1&st=1&lng=1&mfg=&p=100&p=15000&w=&r=&br=8000&br=80000&ll=<g=&t=&db=&dt=&c=&ar=Wide+%2816%3A9-10%29&dvi=&wr=&ol=1&pjl=&pjw=&pjh=&td=&is=&i=d&tr=&oop=1&sort=brt
You can change the brightness parameters to get a model which is appropriate.
You could always consider a double stack of projectors, which takes a lot more setup time, but doubles brightness on screen and can save some money.
Also, not sure if you are truly locked in at that 63' throw distance if you are providing your own projector.
Two of these...http://www.projectorcentral.com/Panasonic-PT-VW530U.htm
May work if the projector allows for a screen that size, you could get 10,000 lumens on the screen for about 3 grand. More setup time every week, but could work very well.
[Edited by AV_Integrated on Apr 20, 2015 at 9:33 AM]
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