I bet that the Vutec has some sort of diffusion coating with the goal of creating a softer image, adding gain, or creating a wider viewing angle, and that coating would make the image seem less focused. I assume that now that you have a large sample you could tell if you are going to get hot spots with this new wonder-fabric, diffusion could reduce that also. If you are not seeing any hot spots or having viewing angle problems I would love to add my name to the list of people interested in knowing what this fabric is and where to get it. I figured that I would end up with speakers next to any inexpensive DIY screen instead of something that looked good, allowed sound thru, and was cheap.
A word on the camera focus debate, look at the first picture of all the samples together, they are stacked several layers deep and they are all in focus, so if ruben is taking the photos in a similar fashion then there should not be anywhere near that much difference in the focus of the camera from one layer of screen to another with the image samples. Looks like a much sharper image on the cheap screen to me.
I do see a potential problem building in the works here though. After sucking us all into his DIY scam, Ruben is going to try to get us all to join his wonder-screen pyramid sales program.
Keep up the brilliant work, I can't go a day without checking up on your thread.
EDIT... OOPS took ten min to type this and by the time I finished it was less relevant. Oh well.