I recently gave my Galaxy S7 Edge to a local community group and moved to iPhone 7 Plus. It has been a while since I have used an iPhone and I must say the 7 Plus is a very nice device. The transfer from the S7 to the iPhone using the App was very simple and painless.
Enjoying the seamless interaction with my other Apple devices ( iMac, iPad, Apple TV). As for the no headphone jack, storm in a teacup, the suppled Apple earbud work as usual and I have the supplied adapter permanently attached to my Beats over ear phones and they just work fine.
I remember a few years back swapping between platforms was a royal pain in the butt but now it's a breeze.