I know this is a topic revisited, but I thought I would get a fresh perspective! I am REALLY wanting to buy an airbrush, but I really don't know which kind to buy. I don't mind investing the money in a good quality one that will last forever. Also, will I need to airbrush outside or in a "vented" small chamber?

I've had the same kopycake airbrush for over ten years---no problems. It's made for food colors--not like the one's for paint--I use the airbrush in my kitchen, and I don't do anything special, except make sure I don't overspray areas that I don't want covered in food colors.