>>And all I wanted was some advice on what airbrush to get?<<
You see, the problem is, there are no "good" or "bad" airbrushes (well, with some exceptions, of course), there are airbrushes which are better suited for the task you need. So, what exactly do you need?
If you just need to lay basic layers of paint on a model, your current airbrush is probably all you need. Or may be a good Badger workhorse with different tips - I'd say, 155 Anthem with Medium (for everyday spray) and Fine tips (for the times when you feel fancy and want to show off), with corresponding needles, is enough. Mind you, you can by a Sparmax for a third of the price of the Badger (plus shipment from Taiwan), and it probably will make no difference whatsoever in your airbrushing.
If you need to paint freehand lines, freehand camo, blend colors one into another and add transparent and semitransparent layers, tints and other fancy artwork, you will probably need something with a tip of 0.3 mm or smaller. But remember, that the finer tip it is, the harder it is to just put a basic layer of basic paint, and the more likely acrylics will cram the tip half-work.
Sure, Iwata Custom Micron is a great thing - if you know exactly what to do with it. If you don't, you are far better off with a basic Badger. As a rule of thumb, if you are not sure if you need Iwata or not, you don't need it. By the time you'll need Iwata, you will not only be sure why you need it, but also will know exactly which model you need. :)
Now, compressor is a different thing. What you need, is a compressor which doesn't break easily, and - absolutely - with a tank. That's all you need from compressor. Me, I've made mine myself from a bit of pipe for the tank, a compressor from an old refrigerator, pressure regulator and some welding. Well, plenty of it. Costs nothing (which is important, considering our economic situation here), works perfectly. You don't need brandnames; you just need something that works.