My experience with airbrushes is limited , though I have heard good things about the Iwata line. It could be the HF airbrush is fine to play around with and learn how to paint and once it self destructs, you likely will be ready for a better one.
I have done a lot more auto painting, and I practiced with auto paint on various kind of metal, to get a feel for how to do it right, the right motion, the distance from the object being painted, and the most important thing of all, how much to thin the paint, which not only will vary with the material being painted, but also will vary with the temperature and humidity (obviously, painting in a climate controlled space as compared to where I painted cars makes a big difference, I might have been in a garage, but might as well have been outside), the color of the paint, the type (metallics were especially a pain for me), and it varies between brands, and even between batches of the same brand.
One thing I highly recommend is some kind of painting booth that has its own ventilation outside the space you are painting in. You can buy one, you don't need to spend several hundred dollars on one, they have them on Amazon for like 65 bucks that look identical to one on Micromark that sells for 130 that is 16x16x14 or so, and if you need more width they can be combined..but there also are a ton of ideas out there of people who have hacked their own booth that would cost even less. If you plan on using it regularly, the people sharing your domicile will thank you, lacquer fumes have a tendency to spread.
