6S was my favourite, it was just extremely reliable and had the best camera for its time. Same design as the 6 but everything else was elevated up a notch.
Headphone jack was a godsend especially when the world was just not ready to let go of it in the next few years. The performance of this phone was amazing as well, I used it for over 4 years and even then there were more software updates to come and it didn’t really experience many slowdowns unlike the iPhones before it (in contrast, the performance of my dad’s 6 didn’t age as well).
Does anyone even use iWork suite these days? Basically everyone I know uses Office or even Google Docs.