The strongest reason to choose a large bottle is familiarity. Sampling beforehand reduces the chance of buying something you rarely wear.

A bigger bottle may be opened over a longer period. Keep it appropriately stored and follow the product's period-after-opening or date guidance.

Calculate cost per millilitre if useful, but include how much you will realistically use. An unused bargain is not good value.

Compare the complete product information before purchase and retain the order details. Good fragrance ownership begins with knowing what you have chosen. A careful choice is about suitability and enjoyment, not simply owning the largest bottle.