No issues with iPhone 15. All of them have been fixed, I can assure you. Get that one.

I heard only good things about how strong 13 Pro/Pro Max performance and battery are. I went through a lot of videos when deciding to invest in the new iPhone 15 Pro and I was left surprised how good the 13 model performed. If these are your listed options, please go for the 13 Pro Max. You won’t regret it. In a year, you would have higher battery health than me with my 15 model. I know that for a fact :))