Structured carriers (buckles, padded straps) are generally quicker to put on and take off, which suits parents who’ll be in and out of the carrier repeatedly through the day — school run, shopping trips, short outings.
Wrap-style slings take longer to learn but distribute weight differently across the body, and many parents find them more comfortable for genuinely long carrying sessions, such as settling a baby for a nap.
Whichever you choose, check the hip and spine positioning guidance (the "M-shape" leg position widely recommended by health bodies) — this matters more for healthy hip development than brand or price point.