Anyone is just posting what he likes.... Just place your seats then chose your screen size. My advice is big screens have a lot of WOW factor but PQ degrades with size as well. You should consider full definition and a good projector if you want anything bigger than 120" if you're about 13 ft-15ft.
THX recommends a max 40 degree and a minimum 36 degree. 40 degree make 150" from 15 feet....make the calculations for 36 degree.
I am having 106" from 10.8 ft and that makes about 39 degree viewing angle. Anything static and I feel the screen is too small. Transformers or Saving private Ryan make me feel I can't stand any bigger.... But sure I needed 1080p resolution ... Check my signature and decide
