The iPhone 15 Pro Max is expected to sell best in the 15 series this year. This is due to the exclusive periscope camera. According to analyst Ming-Chu Kuo, he expects the iPhone 15 Pro Max to sell 10-20% better than the 14 Pro Max.
More so, he predicts the iPhone 15 Pro Max will account for 35-40% of orders for the 15 series. All because of the exclusive periscope zoom camera.
Also, remember that all in the iPhone 15 series are coming with USB-C Ports. This is due to EU mandatory law.