RE: Air Compressor Options
for airbrushing a 1 gallon tank is fine. that PC1010 compressor is being used by finsh carpenters all over the country so it's seen some long run times and many months and years of service if it had any issues they would have surfaced by now in the hundreds if reviews that are on the web about this compressor.
Now a bigger tank would be nice but it is not really a required. the bigger the tank the bigger the compressor needs to be inorder to fill it within a resonable time frame, other wise you end up shortening the life of the compressor motor and developing a lot of condensation in the tank.