I switched from iPhone 4 to note 3 because I wanted a larger screen and apple didn't have one at the time. I appreciate a couple things about android, but in general, I find it inferior to the iphone. Positives are the back button, browser lets you open 20+ tabs (my iphone was limited to 8) and easy data/battery tracking per app. My main problem is the GPS sucks and if it doesn't have a clear view of the sky, it constantly loses its position. Also, it randomly loses its cell connection and must be rebooted (also happens on both of my wifes S4s).
I want my devices to work, I don't want to constantly have to fiddle with them to keep them happy. I expect I will return to iPhone in a few years when this phone gets replaced, but I'll see whats out there at the time. Apple hasn't been doing anything exciting lately and they seem to be creating more problems with their ios updates.