Has anyone seen the XP21N on a full size Da-Lite Dual Vision screen? What were your impressions? I ordered the samples from Da-Lite and it seemed the best one to me. Even though it has the same gain rating (of 1.0) as the DaMat, images appeared to be a little darker and smoother. As for their other screen materials...I found the High Contrast @0.8 was too dark and the other lower gain screens (DaMat included) had washed out blacks.