Is that the same airbrush that Haddock has?
It looks the same, mine has a 0.2mm nozzle which I thought would be too small.
The chap at Albion Alloys convinced me 0.2mm was big enough provided I thinned my paint
correctly, if I didn't like it, he would swop for a 0.3mm nozzle, it works fine.
I think it's just as important to have a reliable source of clean dry air with fine control
of the pressure and paint thinned to the right consistency, a cheap brush will work just as well
although it probably won't last as long and be as nice to use.
Still, I'm no expert.
Haddock.