Ive never heard a Airflex Turbo in action however, i have heard & used the Scorpion. Very loud, but this is to be expected when you have 3 vac motors running at same time. The water pump is louder than i would have expected. I see on the website that you can purchase 4inch hose i think it is that will carry away the moisture from the machine plus will help with the sound.
Richie.