Personally the brush feels WAY to over powered. It can deal with both dust and dirt real quick and it negates the speed of that air can. The air gun(I forgot what it's called) area of effect is way to small so even if I used the air can previously I would rather use the brush then the gun because it can deal with dirt a lot faster.
I small comment I want to make is that the noise for putting stuff together sound too much like opening a can of pop, to the point it kinda becomes distracting.