I want to upgrade my phone for my upcoming birthday from the XR, served me very well for exactly three years since I got one for my birthday too

I’m torn between new 15(common/plus) and used 14 pro now, they cost very similar in my region.

I am mostly concerned about battery life on the 14 pro, will it be relatively good comparing to the 15 which doesn’t have promotion display (it’s kind of a not a big deal for me, but it’s attractive to have 120 hz display anyways…)

And for camera, i don’t really know if camera is much better on the 14 pro and if it all worth it, what do you think?

Thanks.