drag gun thermal dynamic plasma cutter

I know that my dad worked for a subsidiary of Ford/Gm/Chrysler and they had the big expensive plasma cutters when they were still newer and he said all they did was SUCK a lot of power and made what ever you were working on extremely hot and the cutters were massively slow cutting. My point is I wanted to buy a plasma cutter off craigslist and my dad said he would take a pneumatic cutting tool over a plasma cutter.