It's funny how much of a difficult debate this is at least for folks such as me. I'm upgrading from iPhone 12 Pro Max so have some hands-on experience with the large size and sometimes unwieldiness. I often have it sticking out of my pocket, etc, but, and this is a big but, I have grown accustomed to the gorgeous, large screen.
I ended up going with the 15 Pro Max, although I could see myself waffling again because I'd like a phone that could fit in my breast pocket. One other note, however, is that now that I use the AWU I am less chained to my phone and even *gasp* walk or take a hike without a phone, since the AWU keeps me connected and functional to that nth degree. 😉