Airbrush or compressor? If you're a beginner, try getting a relatively cheap one.... learn what to do and what not to do to an airbrush. Once you got a hang of it and know how to take better care of an airbrush then can consider better brands.

I've used brandless airbrushes for quite a while and my results were very good until I needed to do something precise or high gloss....

You mean something like this ?



if yes, then it's usable...just that when you wanna do something much complex like gloss/candy finish, you'll hit some limitations....the air pressure is inconsistent and it gets hot quite fast. But it's not too bad for beginners..