I am a newbie (especially to projectors). We are looking for a projector for our church sanctuary in the 3000 lumen range (4X3, 1024x768). I am getting conflicting info from sales people about which is better (and even brighter). The sony guy says the 31 at 2800 lumens is brighter (and clearer) than the mit at 3000 lumens. The Sony quote is $7700. I've found a Mit source (used) for $5,800. Any help or thoughts would be appreciated. Thanks