I use a Purlite Air Helmit out of New Zealand with satisfactory results.
It is much less costly than Airstream and has an interior battry pack.
Its comfortable to wear. I believe it's now marketed in the U.S.
under the name "Trend".

Terry Poperszky wrote:
By the time I was finished turning a walnut bowl last night, I felt as
though I had been snorting fire, my nostrils burned so bad. That is with
My Jet air filter on high and a shop vac hose sucking air next to the
sander. So, I guess it is time to spend a little money and save my
sinuses (not to mention the lungs and eys as well).

Would you mind sharing your experiences with the current crop of air
helmets?

Terry