depends on what you’re painting, and what you’re looking for, really.

I like using airbrushes for coverage applications- priming, base coats, they’re more even and consistent while also being very quick. It’s also great for layering colors/patterns and shading. airbrushing gives an even and smooth patterns.

standard brushing can do better at fine details and creating a textured finish. they’re also useful for applying washes and masks as well where airbrushing won’t work, and pinstriping is a harder edge if you’re not wanting to spend oodles of time masking off (with tape or paint-on rubber stuff.)

Sponging with make-up application wedges, or almost any other kind of sponge and ragging with paper towels or dishcloths or whatever are also great for applying washes and removing layers off, creating different textures and looks. It’s not like there’s hard rules here, so grab failed prints and experiment.