I'm specifically looking at the AIO3 system for iron removal. I suspect I also have iron bacteria, so I want the ozone to take care of that rather than pre-treating with chlorine, thus my interest in the AIO3 system. I can't find reviews anywhere, except on their website, which in my mind is useless. I suspect they are your typical water treatment scam-type company (eg, no prices on website), but their system supposedly does what I need done, and it has the right footprint.
AIO3 system
https://www.earthsmartewater.com/aio3-system/