There's no hard rule, but in general I'll go with no break for slim pants and lots of break for wider pants --- but there are variations, such as wearing slim chinos stacked like jeans or rolling up full-leg cuffs. it kinda also depends on the rest of the outfit and your general style. Warning: Spoiler! (Click to show)
thank you very much, parker, much appreciated. as i like a more tapered chino, with a smaller, but not super tight, leg opening, i think a very small amount of break is what im looking for. not hovering over the shoe, but not pooling/stacked on it either.