Can someone explain how screen gain works? I'm looking at the Stewart Cima Tiburon, with .95 gain, and the Cima Neve with 1.1 gain. So will the Neve be 15% brighter? My screen will be on the small side (100" diag.) and I'm wondering if it's better to go with the Neve because of it's slightly higher gain, even though I have a light colored ceiling. Proj. will have 1700 lumens & my throw is about 11.5 feet.