Raymond,
They are both a compromise. However at EVENT2 we used a micro perf screen. I pointed 5 different resolutions and types of fixed pixel projectors at it. No-one mentioned seeing any moire, During set up only one of the PJ's was causing a problem. I do agree though that it can be and you need to be aware of it.
It was a DILA pj they used in usa at CEDIA. The banding may have been a PJ issue but it looked unlikely to me. It was noticeable on most brightish scenes but the top right corner of the screen you could see the actual material structure without banding. I was surprised. This was not standing in front a foot away, this was sitting down in the sofa they had put out for viewing. I can't comment on sound quality as it was not a great listening environment.
If you need acoustic screen then it's worth investigating as BRANX has.
Gordon