I am in the process of upgrading my home theater. I have dedicated a room with total ambient light control, dark walls, and stadium seating. I have preordered the panasonic ae7000u. However, I am not sure what screen I need in terms of gain. I understand the 7000u is going to be bright in terms of lumens but my throw distance is going to be approximately 15 ft and not sure if I need a higher gain because of distance. I have looked at the Carada 106" brilliant white which has a suggested gain of 1.4, however I understand it is a little lower. I currently have an ae900u, soft picture, and a da-lite screen with a gain of 1.0. any suggestions would be greatly appreciated.