I've considered the switch back to Android myself, but I went to iOS in the first place because it felt more basic and user friendly. My techie friends enjoy the open-ness of the Android OS, I think I'm just done with Apple for now.
^ Personally I'd steer clear of the LG G3 because of battery life. That's the main reason I got the M8 over it. My M8 lasts all day and still has 40% left afterwards. From what I've heard, the G3 only lasts like 8 hours.