I went back to a SE because I wanted a pure communication device. Something nice, powerful, one handed and pocketable. I don't do any social media, videos, etc...from my phones.
Once I'm home or on vacation, my iPad gets most of the use (even though my SE blows away my 1 gen mini iPad lol). All my forum reading, texts, emails, and Web surfing dutys go to the iPad.
If I didn't have the iPad and could only have 1 device, I would be a iPhone 6s+ no doubt.