I didn't care for the 6 Plus initially, because the size made it too cumbersome, But once I saw where the market was headed, I decided I'd better get used to a larger phone. So I used a Galaxy S6 Edge+ and had no problem adapting. The 6S+ is slightly larger overall than the the Edge+, but it's been a seamless transition between the two and I can't imagine going back to a smaller screen.
However, I've kept my old 5S around for those times when I want to streamline. Especially during exercise. I'm not ready to strap on an armband that carries the 6S+.
