Going back to Spray cans

For people who use an airbrush, do you go back to spray cans sometimes? Is it more cost effective to buy rattlers in some cases? For example to spray larger surface areas like priming a figure a single color.
I have just started out using an airbrush but find myself going back to spray cans when spraying base colors for larger figures such as leaders.

I will start a new custom soon (ROTF LC Optimus) and would like a little advice in going about the base spraying for this figure.

Thank you for reading and any advice is appreciated.

I guess it all just depends on what gets you the results you want for the least amount of cash. Spray cans (even quality ones) are relatively cheap, but you can't really mix colors to get exact colors you want. Airbrush sets can get a little pricey, but the paints are fairly cheap and you can mix primary colors to make your own colors that might not be available in the spray can variety.

Nope never. I will buy spray paint and then decant it into a glass jar and spray it through my airbrush.

Thats actually a good idea! Appreciate the advice!