Phantom Foam is owned and run by Cole Moore. The spraying is done in-house rather than handed to a sub, which is the whole reason the written scope and the finished work match.
That matters most in the places nobody checks afterwards. Applied depth is verified with a gauge as the work goes and recorded on the scope sheet, and the crew works in supplied-air respirators with the work area isolated and ventilated. The safety and re-entry page sets out how that is run.
It also means you get a straight answer when the cheaper system is the right one. If your ducts run inside conditioned space, we will tell you that blown-in on the attic floor is the better buy, and we will say it before you have paid anyone.