This has to be one of those individual preference things.A high quality screen such as the Stewart film screens up to 2.0 gain,in my opinion, don't have that much hot spotting.I'm using the videomatte 200 with approx a 2.0 gain and the image quality is wonderful! In black and white one can see a little color shifting in that the right side is a little more blue and the left side is a little more reddish. I personally feel that the additional light output is easily worth it. My screen is 107" wide @ 16x9. My HT is 16'x25' with seating access on both sides so there is very little off axis seating however.I know I'm going to get in trouble for this but I'm not sure what the reason would be for going way down to 1.3.The additional engagement to the image with the added light and at the same time the superior image quality of CRT just can't be overstated.