I don't believe that any screen worthy of a decent projector can also be "acoustically transparent".
I'd get a VP180.
Check out
Screen Excellence screens.
* Video
Enlightor 4K is the ultimate neutral projection surface, providing an absolute whiteness. It also presents a negligible gain loss when compared to perforated screens. Its total absence of visible structure equals the best existing solid screen materials. In terms of video imaging quality, the Enlightor 4K sets a benchmark.
* Audio
Enlightor 4K acoustic transparency differs from any other AT screen fabric : It provides a uniform attenuation of -2.5 dB over the whole frequency spectrum, hence allowing to simply reajust volume level on the front channels without any type of EQ.
This is the screen I have my eye on for my future HT. So far, I entend to get a 2.35:1 screen and put 3 in-cabinet M80's behind the screen.
