Aztek- pls. don't hate
It's easy to see how people are drawn into the marketing of Aztek airbrushes, like I was. Imagine a hobbyist, new to airbrushing, and a little intimidated by the stories of what it takes to properly clean and maintain a more conventional one. Combined with the moniker 'ModelMaster', the 'hobbyist' look and feel of this particular airbrush, touted ease of use, so on, and you have a recipe for brisk sales to the scale model consumer base.
The hammer on the nail for me was my acquisition of this book, some years ago-
http://www.amazon.com/Big-Book-Airbrush-Techniques-Materials/dp/0823001644
The Big Book was published when Aztek was still a Kodak product, so they had no particular bias for scale model applications whenever they did mention the Aztek. In fact, they had praise for many of the manufacturers they used. But guess which airbrush they seemed to like best for fine detail work? Although this book almost reads like an endorsement in some places, the appeal of the Aztek was hard to resist to a casual hobbyist with a limited budget and only personal projects in mind. Maybe I should have known, but I wound up liking the Aztek; not really sure why. Is it perfect? Is anything?
I'm not going to sit here and write something to contradict all of those users out there with bad experiences. I will say that replacement nozzles are not that expensive ($12 each), and pay for themselves if your work happens to earn you a living. So, if you are not particularly obsessive with cleaning your equipment, it is probably worth buying more to keep handy when clogging starts to occur and you need to rotate. You will have resolved the particular complaint about nozzles.
On the other hand, I realize body-related problems are not so easily remedied (unless you consider the warranty), but then I probably don't build models often enough to see more of these type problems that other users seem to encounter on a regular basis; I don't know.