Thanks guys! Jim McC was right, it was my bro-in-law's and it was an Optima H79, not an Epson. Now that I looked up the Optima I'm freaking out. The older Optima had a 5x, 8 segment wheel where the Mitsubishi has only a 4x, 6 segment wheel... crap! I was going to order it today but now I'm hesitant. I could see rainbow with the older Optima but I had to make myself see it by shifting my eyes across the screen very fast. I never noticed it with regular viewing.