I got an iPhone 7 after I cracked my SE and couldn't switch back to SE. 7/8 (regular, not S) have the perfect size (both the screen and the phone in general) for my hand - not too small and I'm still able to reach the upper left corner with my right thumb when holding it.

The SE screen is almost comically small when compared to its bigger brothers. I have problems typing quickly on it, too - and I don't have particularly large hands. Maybe it's not a problem for DEX builds though.