Maybe this doesn't belong here, and I apologize if it doesn't.
I ordered a 6 plus, took delivery and my first impression was that it was too big. I ordered a 6 and planned to return the plus when the 6 arrived.
However, I've been using the plus just to see how it would work for me in day-to-day activities and surprisingly, I like it. I could care less about the camera, I still think the size rather unwieldy/inconvenient, but what really impressed me so far has been the battery life. it's absolutely fantastic and everything I've been looking for. I'm at 7 hours of usage with my normal usage pattern, with 22 hours of standby and am sitting at 47%. My 5s would have died twice by now.
My 6 has yet to arrive, and I will give it a fair shot, but I'm leaning very heavily towards sticking with this 6 plus, just because of the battery life.