Hello everybody I recently ordered optoma uhd 40 and since I am waiting for it to be delivered I started thinking about the screen I should buy. I have decided that the size will be 120 inches but I have not any other knowledge of how should I pick a screen. I would really appreciate If anyone can make a suggestion or can give me information of what should I pay attention to. If someone can suggest good brands of projector screens would be very useful too. Thanks a lot in advance.