I keep on going back and forth.
I can relate so much, it is really a mixed bag this. It is my most used tech gadget and I really LOVE it, still I am so FED UP with the constant abysmal battery life and buying a new unit will only give me some new months of ok-ish battery life again (especially since I don't want the 6,1") and then it is back to where I am now. iPhone SE 1 and iPhone 6S+ works fine as long as I keep them charged often during a day... Still, better camera and more storage... gah