120" or 133" fixed screen, what should I buy?? Sony 55ES projector, on a Dragonfly or SI Slate screen. HT 25'x15'x9' part of a 64'x15'x9' rec room. Controlled ambient light for movies (black pit) and controlled recess lighting for DirecTV sports while playing pool, shuffleboard or air hockey. Why not the 133" vice the 120"??