While I have two air-brushes and a compressor, I haven't used them in years and have got by with rattle cans. I done fades and two and three tones just fine with them and they work for me. However there are MANY modelers who prefer to use an air-brush and there is a lot more things that can be done with them. I hope one day I'll pick up my air-brush and use it again, we'll see.