I thought that the best ALR performance hands down was from the Valerion long throw Fresnel screen, which had a measured gain of 0.55, 81% ambient light rejection from overhead sources, and by far the best brightness uniformity compared to the lenticular ALR screens. The only downside that I noticed was that when flipped upside down for a ceiling mounted projector, there seemed to be some loss of brightness since the focal point of the Fresnel structure was no longer lined up at eye level, but it was still far better than any of the other ALR screens. Even the viewing angle, which is typically a weakness of Fresnel screens, was more than acceptable, even at 45 degrees.