The other good home airbrush system besides Temptu is Dinair. You can do more with it than Temptu because you load the color into the gun like a professional system, so you can go beyond just foundation and blush (and fun stuff like hair, temp tattoos etc.). BUT the airbrush has to be cleaned after each use to prevent clogs etc. so Temptu might be less maintenance. I think Dinair packages range from $200-300 which includes various colors and other stuff.
I have only read bad reviews about Luminess. Airflash sounds interesting, I have heard good things.
I think Sephora had theirs on sale, along with the cartridges too. Don't know if it is still on sale. this looks like a fun thing to have, but I am afraid I would make a mess! I don't wear foundation enough to justify the expense.
Very cool! Have you tried this Fawnie? Which ones have you all tried? I have always wanted to experiment with airbrushing. Can you use your own makeup in these or do you have to go with specific products?