Spray can paint
I don't mind using spray cans for some of the markings and some of the trim colors. I usually don't use them to spray the entire plane because I have too much trouble with runs when trying to wet out a large area.
One of the disadvantages I have with spray cans is that I don't use them very much and, over time, I have some nearly full cans that have lost their propellant. Seems a shame to throw away all that paint.