Review after approx. 300 operating hours. This projector replaced JVC DLP (rebranded by BenQ). The projector is attached to the ceiling. The screen is a 110-inch ALR screen with a 16:9 aspect ratio. The light in the room is sort of controlled - the windows are on the sides of the screen. The lighting in the room is provided by several light guides on both sides of the room. The walls are white so the light from the guides reflects everywhere. Adjustment: The ceiling in my viewing room is low - the centerline of the lens is below the top of the screen. The JVC only works with the extreme keystone correction. Epson has some readily available pens. This made lens shift adjustment extremely easy, especially when working with something overhead. The JVC lens was in the center of the projector, while the 3800's lens was offset to the side. The lens shift meant I didn't have to bother with moving the projector mount a few inches to the side. There's a bit of play in the grips, which is a little annoying at first, but you get used to it quickly. The amount of lens shift is incredible, making it difficult to position the projector. less attention. Brightness Brightness: The old projector was rated at 5000 lumens at full power - even in Eco mode this projector should have been significantly brighter than 3800 but I can't tell the difference. I would attribute it to improved contrast. No problem when viewing on an ALR screen with the light dimmed about 50%. Noise: yes, loud. About the same height as JVC, but the projector is installed directly above my sofa. Noise only really stands out when you hear it or there's no dialogue/music. The exhaust grille is right next to the lens - if the projector is behind your seat this might be more desirable. The blinds don't point straight back towards the screen, but tilt slightly to the side. Size: I was originally considering 4000/4010, but then again, my low ceiling and a huge projector hanging over my head seemed bad. Idea. The 3800 has gotten a little bigger than I expected, but that's nothing compared to the 4000/4010. Installation was pretty easy too, but the project's wider mounting hole spacing required some MacGyver work on the projector mount. The Bad: Convergence on my 3800 is a mess. On the one hand, the picture seemed a bit softer, but out of laziness I didn't understand what the point was. There's a nice "pattern" button on the remote that displays an alignment grid. He confirmed that something was wrong on one side of the screen, but again - laziness. The fuzzy grid lines on the left side of the screen were twice as wide as the nice, crisp grid lines on the right. The blur was especially noticeable when playing video games. At first I thought it was an alignment issue and the projector was not perpendicular to the screen. Eventually, while trying to avoid some chores, I made the mistake of getting to the bottom of it. A few hours later, after playing around with the projector mount alignment and then delving into the convergence menu, I concluded there was nothing I could do about it. If you're a Type A person, trying to make a convergence point adjustment is like a hamster on a hamster wheel - you just can't stop. YMMV - my advice is to test the convergence of the projector when you get it. Maybe it's just luck. Because I'm lazy I'm currently out of the Revain replacement window and don't want to go through the hassle of getting a warranty repair from Epson. The projector is still usable but it bothers me now that I have confirmed what the problem is and there is nothing I can do about it other than a replacement.
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