Also had to pick between the two, but unfortunately budget was unexpectedly short to afford the 15 so I went with the 13. It's still amazing, great cameras, and never lags at all with the apps I use. The software optimization compensated the lack of 120hz as it's still smooth to use and never really had a hard time adjusting with the screen since I have a secondary android 120hz phone. If you want an extra 2GB RAM to futureproof it a little, just get the 14. Getting 8-10 hours SOT on WiFi with 100% battery health, and around 5-7 hours SOT when using Cellular Data or when gaming. Thinking about it, I realized that I didn't really need the iPhone 15 after all, there are some upgrades yes but the iPhone 13 is still great to use for a few more years. To be real with you, I only wanted the iPhone 15 because of the name (15, yup I know, for clout), it's newer, and has the Dynamic Island which I had a fear of missing that out but I don't feel that anymore. Running iOS 18 Public Beta 3 and it's still smooth btw, the iPhone 15 won't really benefit a lot with iOS 18 since it's focused more on Apple Intelligence, which the 15 also doesn't support. Answer from mrkgelo on reddit.com