I’m a “use what works for you” kind of person. I’ve been using the Pro Max iterations of the iPhone lately because mainly I like the camera. Having my phone with me out on a hike is better than hauling an extra piece of kit and I like having a bigger screen because I’m middle aged and I have to do the holding everything 2 feet away arm extension to read. Realistically, there’s nothing I would call a major difference among the models.