I found this company "lusoscreen" when i was searching my projector screen, their factory is about 25 miles where i live.
i didnt bought the curved screen because i had no space to put them, but i was really impressed with it in showroom from what i see.
at the time the owner himself told me that its a family business, and they being producing their screens, for more than 20 years, their high gain screen to use outside has 26 gain and is meant to be used in sport events or direct sunlight.
According to their website http://www.lusoscreen.com/pt/company/aboutus.htm
their screens won a CeBIT-Home awards in Hannover em 1996 and a gold medal in genebra inventions event in 1997 .
At the time it was the only screen in the world capable to work with direct sunlight , and their home theather screen has more 500+ contrast than a white screen, I think at the time of my visit it was mention their home cinema screen had 13 gain, but can remenber well.
150cm (with wood +/- 175cm) (4:3 or 16:9)
200cm (with wood +/- 225cm) (4:3 or 16:9) price 880€ that about 1.150$
234cm (with wood +/- 260cm) (only 16:9)
ps: dont no how much the other brands charge for their high gain screens, but this one looks like a bargain and they are not made in "china"