I'm keeping my Note 4, then maybe back to the iPhone in a year or so unless one of the new manufacturers proves decent. Taking the replaceable battery and memory card slot away from the Note killed any use I have for it other than the pen. No wonder Sammy is floundering.
I'm on 8.1 and will be upgrading. Strange times we live in, gas is going down during the summer and MS is giving away their newly released operating system.