I have looked around the board and I'm having a hard time trying to find out which screen I need for my setup. I will be purchasing a SP7210 very soon. I'll be sitting about 18ft away, using my livingroom. I will be putting something over the windows, but I know I won't be able to block out all the light. I would like a remote screen, but its not necessary. Should I get white or silver? I am very new to the projector hobby, this is my first, so any help is greatly appreciated.