you already know that you'd prefer carrying and using the Air every day, then this stops

being a purely financial exercise. The financial side, though, is also interesting. Your 16

Pro is almost certain to lose value immediately after Apple's September event. That's simply

because there will be newer flagship models and the used market adjusts very quickly.

The Air is a bit different. Current expectations are that Apple is moving to a staggered release

schedule with the next Air not expected until a later launch window rather than this September.