Dru Blair Iwata Brushes: have a preference?

I just asked Dru about this. And they are in fact brand new airbrushes.
It may have changed but it use to be the ones used in classes and were being replaced with newer models, he may now but them in bulk and twaek them then sell
While I have settled on using the small H&S cup on my Takumi I checked out some cups from cheap Neoeco brushes and was surpized to find they fit pefectly. I haven't tried them on my new Evo but assume they will fit that as well. This is an inexpensive way to put a smaller cup on the Takumi and the smallest one has a very similar shape to the H&S cup.
You mean with the Iwata threaded side feed cup adaptor?