Hi Bill
These are fairly different ranges that you are mentioning and they are each of the 'Createx' brand, but suited for different purposes. It seems that some of these products are still sold purely because they were once invented. Here's the run down:
Createx = Regular everyday airbrush inks - this line of paints contains opaques and transparents and is quite a course pigment probably not suitable for very fine airbrushing.
Createx Auto Air = a water borne createx product, guaranteed lightfast (so it won't fade), flows quite nicely through to airbrush and a good replacement of urethane based paints (but don't expect them to flow as smoothly as urethanes). These paints definitely flow smoother than regular createx mentioned above.
Createx Wicked = A refined version of auto air. If you are interested in getting auto air, save yourself the hastle and get wicked. They're the finest range of automotive grade paints that createx sells, the performance is quite good, lightfastness is guaranteed and they're a reasonable price.
Createx illustration = The finest range of Createx paints, flow extremely nicely through even the finest of airbrush nozzles, however they won't offer a guarantee for automotive use. If you are going to be doing personal airbrush illustration work then get these, you cannot beat the detail in the Createx range. They are also lightfast.
The neons and fluorescents i think you'll find will be similar to the first category of Createx paints. I haven't used these myself..
If you want to do the same stuff i've done in the tutorials then go for the illustration paints, if you want to go for automotive finishes and can't use urethanes then the wicked range is the way to go.
Hope this helps mate.
