To date we have not had any problems with moire artifacts and DLP projectors. We have had problems with certain LCD projectors. The majority
of the LCD moire problems have been with the native 16 by 9 LCD PJ's. The Sharp 9000 will be the first native 16 by 9 DLP that we will test with a perforated screen. I do not anticipate any DLP/ moire problems with the new 16 by 9 chip but, I will feel more lot comfortable after actual testing.
PS: As I am writing this thread the Sharp just arrived into my office, Stay tuned.