Hansa
Hansa airbrush automatic and double-action high-quality tools made in Germany.
They now part of Harder & Steenbeck family, but there are quite a few special things about them. First of all, 0.3mm nozzle availability. A loot of users consider this size the most universal for airbrush and well, H&S own model lines completely missing this size. But in Hansa series it is available for all models!
In addition, models 181, 281, and 381 are automatic action airbrushes. They are still double action (air and flow control) but they are what we call "double dependent action" - there is no push down action on the trigger, only pull back. When the trigger pulled back, the air flow starts first and if pulled further, the paint flow will join. It is very popular among new users who don't have the automation for "push-pull" in their actions. It helps to avoid a lot of splatters caused by released (lifted) trigger.