I upgraded to a 16 pro from an iPhone SE 2. Things I noticed:

Pros:

Better screen, cameras and build quality. Like way better. The glass on this phone is durable enough to not use a case and I don't. After beating it up for a year, its looks and works great. The build quality of this device is bordering alien.

Face ID is very nice. Touch ID does not like my skin.

I like the magnetic accessories and MagSafe.

Visual intelligence is actual quite useful for helping to identify stuff. I’m a curious person and actually use it.

Having flashlight on the action button makes it feel like a tool. I use the flashlight virtually every day.

It’s nice to not have my phone lag, which was a problem for the SE2. This phone is very capable, battery life is much better too.

Cons:

I have had more camera crashes on this iPhone than any I’ve ever had on a new flagship. Less than on my dying SE2, but the camera should not crash on a new flagship. It’s mission critical equipment in my book.