Some of the artifacts you are seeing on the Silver (right side) is from the reflective pearlescent paint (similar from the distortion on texture you are seeing on the left (aluminum paint).
What the picture doesn't convey is how much better aluminum performs than the other two screens. Hotspotting is definitely there, and reflection bits are quite large and it can be distracting (not to mention the uneveness of the application), but contrast and brightness is outstanding, even more surprising, the color is just as good as the blackout cloth.
The blackout cloth is pretty good, even better than I first thought before I put them side-by-side. The color is outstanding, especially in the dark. But the contrast is not good, especially if there is ANY ambient light. That is the main reason I went with silver. My family room is open to the kitchen and light control is not good most of the time. If there is any light at all, the blackout cloth really struggled with contrast.
I used 3/4 glaze to 1/4 silver pearlescent paint. The best quality about this screen is the light rejection and contrast. Even with a lot of ambient light, the picture is very watchable. The brightness is equal to if not slightly better than the blackout cloth, pretty impressive considering the darker paint. The color is definitely not as good as blackout cloth, but I think the gain in contrast makes up for that. Only thing I regret is that it is IMPOSSIBLE to get an even coat with a roller. I still have visible roller marks, that I am not sure how I am going to remove.
I also think, this might not be the way I go next time. I think I would much rather try a "silver" tinted fabric, if such things are affordable - mostly due to the painting difficulties.