15 Pro, battery life was not great whenever the camera was used on occasion, was terrified of how bad it would be on holidays/trips. Returned it for 15 Pro Max, simply for battery life, not 5x lens. Wanted to buy the 12 Pro but the square design with stainless steel was too heavy/ not ergonomic so stayed with 12.
4 > 5s > 5s > 7 > 12 > 15 Pro Max
4 > 5s > 5s > 7 > 12 > 15 Pro Max