I have to spray outdoors, each time I spray, there's a huge process in setting everything up as far as AB procedures go. At least for my situation. I second the motion in Gmorrison's comment in that a rattle can has its benefit and is easier as a set up and shutdown issue yet, it's pricey, hence my use in Krylon/Rustoleum products. Again this is me experimenting.
As for AB, my very first airbrush was a Testors beginner AB. It's a all plastic model with a quick change release, uses pressurized can air of which can be pricey, is a external mix, and is extremely convenient. You just throw everything away when your done except, the AB.
Check out my B-17G Build, that was sprayed with the Testors AB. It's not something that you would do detail painting with but it definitely does a really good and decent job for prime and base coats. Or even clear coat sealing.
So there you have it, the pros and cons. AB, set up issues but economical, rattle can, easy yet can be pricy unless you look for sales like I did today.
I purchased a Krylon primer 12oz. can for $3.89.
Toshi
On The Bench: Revell 1/48 B-25 Mitchell
Married to the most caring, loving, understanding, and beautiful wife in the world. Mrs. Toshi