I can only comment on the Silver Fire mix. My recommendation is to not
go with this advanced formula if this is your first screen and you don't intend on making painting projection screens a hobby.
While I think creating a gray screen paint by mixing red, green and blue tints (which Silver Fire does) is a good theory, I'm not sure the benefits are worth it over a gray paint based on lamp black.
I think the 3 component mixes of Silver Fire are meant to make adjusting the formula easier if the need arises. The first two component mixes are simple to make, the Color Component mix isn't. These paints, especially the green, are thick and stick to whatever you are using to measure them, and due to the small amount of paint used, this can make a noticeable difference in the color of the final mix.
Of the 3 different samples of Silver Fire to be tested with a spectrophotometer, they all showed significant color differences.
I'm not saying Silver Fire is bad, just that it is an advanced, perhaps even somewhat experimental, mix and, IMO, isn't for someone who just wants to make a single screen and be done with it.
I made a Silver Fire screen, but due to a back injury I haven't gotten it up yet.