Along with Plum1030's excellent advice I would say look at the T&C (Badger) Omni 4000 and 5000, as they are both excellent airbrushes.
The Omni 4000 is very similar to the Iwata HP-C in shape and size:
The Omni 5000 has a smaller cup:
Both of these along with the Iwata Eclipse are excellent choices.
Mike
“Wisdom is the right use of knowledge. To know is not
to be wise. Many men know a great deal, and are all the greater fools
for it. There is no fool so great a fool as a knowing fool. But to know
how to use knowledge is to have wisdom. " Charles Spurgeon