GeorgeA
Soooo, love it or hate it, huh?
Sounds like it's luck of the draw and there's a reason I'm not a professional gambler.
Despite the "love or hate" reaction, do not expect the double action Aztek to be cheap. Most come with multiple nozzle for drawing different sized lines. Testors advertises it as a feature. I look at it as a draw back. I expect a general purpose nozzle to be able to do most work I need in modeling without the bother of changing nozzles.
I had an Aztek A4709 set for a month and found out that I could not use it like Brent Green does. I ended up selling it on Ebay for a small profit. I got the Iwata Eclipse HP-CS and never looked back.
I'll wait a bit and get a either a Badger or an Iwata as a Christmas gift for myself.
It would be best if you hold them in your hand and try the airbrush before deciding on which brand to get. The Iwata is a much heavier airbrush, but balance well in your hand.
I have the Iwata HP-CS AND the Badger Patriot. They are completely different airbrush. When you put the parts side-by-side, the CS nozzle is about 1/2 or less the area of the Patriot nozzle hole. The CS needle tapper is twice as long as the Patriot "fine" needle tapper. The Iwata CS can be a fine detail airbrush and it is sensitive to paint thinning and cleaning. The Iwata CS is more similar to how some user (brickshooter) described the Badger Velocity.
I like the more linear control (slower transition) of the Iwata CS. But it makes me thin the paint more (compared to the Patriot) and have to spray more layers of thin, misty paint to get the solid coating I like. It took some getting use to. On the other hand, the Patriot is a much more forgiving airbrush. I can spray the MM Acrylic unthinned (not recommended for cleaning reason) and, in all case, lay down a solid layer of color much more quickly. It still have plenty of detail for pre-shading or free-hand camo in modeling, but the feel and control is completely different from the Iwata CS.
I don't remember reading a direct comparison between the Iwata HP-CS and the Badger Velocity by the same user at this forum yet even though brickshooter's experience with the Velocity and mine with the CS sound very similar. It is up to the individual user to decide whether he likes the gentle action of the Iwata CS or the quick draw action of the Badger Patriot better. You will see plenty of users on either side.
You may also want to look at the Harder & Steenbeck Revolution Silverliner 2-in-1. You get a 0.2 mm and 0.4 mm nozzle in the set. It will get you covered if you airbrush both finer details and larger area for large models.