Hey ululi. You will get as many opions here, as there are airbrushes.

You could start doing some research, by doing the Google thing. There are $5.00 airbrushes, and there are some that cost hundreds. All depends what you want, and what you can afford to spend. Any of the bigger names are good, Iwata, Badger, Paasche, and Thayer & Chandler, to name a few. Again, some people will tell you that one is so much better than the other, and that one brand is junk. Ford, Chevy, Dodge? I have a Badger 360. Nice airbrush, that I bought on eBay. Not cheap though. I think it was around the $100.00 mark, new in the box. There are more expensive ones though. If you are using a HVLP, then you have a compressor. Just don't get sucked into buying one of the little airbrush compressors. I use a small, cheap one, that has a tank. Paid like $50.00. Here is a link to a website that may help a bit. There is LOTS of info on the web.
http://www.tcpglobal.com/airbrushdepot/b360sets.aspx I know i didn't answer your question, but I hope this helps a bit.