Which media blaster?

You'll go through 15 pounds of media in a couple minutes with any kind of decent air pressure so I'd avoid that second one like The Plague. Pot blasters like the other two usually work great but are kind of time consuming to fill due to the small opening. Is portability necessary for your needs or would you better off with a small cabinet? They're about the same price range and contain the mess without having to suit up, use a respirator, find a big box or tarp, sweep up and strain the leftovers, etc.