i've been watching this thread.
all i will say is i had a rep trying to sell me on jotun paints.at the time i was using international.
not putting jotun down,but stayed with international.
it did not even come near.
that mask is not suitable for isocyanates.
last year i spoke to 3m a bout mask they do,and they say none of their mask are suitable.
go airfed is what they told me.
i think alot of people feel; they have to gun a d.a flat out.
very rarely do i run flat out.
and by turning down air to what i need.it's not using half as much air.
i'm sure langy and others are the same.
borrow one and try it out.