Pure freedom crash test looks very suspicious to me.
It says they did it in March but we are only just hearing about it? Also the way the video is cut you don't see the actual impact side on, and wow how it flew into the air!
I think that the result was probably that it would have been fatal for the driver. In other words, a fail. I too wonder if Mira know they're using it to promote.
As for systems, ionics are good, but as you say, expensive. But they also have a company called Pure2o, which is a kind of no-frills version of their main systems. Like ionics other systems they are crash-tested (properly!) and best of all they have a price promise and will beat any other price.
So my recommendation would be Pure2o