Sorry to keep asking dull questions, but I've now got my Eiki projector (Sanyo PLV30 clone) and I'm going to make a screen until I can afford a nice electric one. I'm going for an 8' x 4' mdf affair, with Ice Storm paint, all I need to know now is number 5 or 6. I know I could try both and see, but I thought I would ask here and see if anyone else is using the projector with a painted screen and get some advise. Thanks in advance. PS: be prepared for my next bout of questions on how best to connect the thing up.