I tend to agree with everyone else on the use of a Spray Booth. In many ways it is a necessity to cut down on overspray and odors. I suggest focusing on the exhaust or pulling power of any unit. Filters, and how hard they are to change and their makeup as far as filtration is concerned. Lighting is another part of a booth to consider. You may already have a lamp of some sort that would provide the light you will want. There are many different free standing lights that you can put together or maybe the booth with the built in lighting may work better for you. Back to your basic question about spray cans & airbrushes, it really makes no difference which you're using. The main thing is to contain the overspray that is going to happen and get the fumes out of your living area. I will tell you this, it's a far cry from the old cardboard box I used to use with no exhaust.