Living and working in a tech centric environment I use and enjoy Android and iOS.
The lion's share of my friends are serious Smartphone enthusiasts that also use both. Some are experiencing terrible frustrations with their iPhone 6, 6+ models. Conversely mine's trouble free. So hard to say what it is due to the fact that amongst us about 40% of iPhone 6 series are a mess of problems.
A hard core Apple Smartphone and Computer user, I've never seen this fragmentation of good vs bad iPhones or iOS issues in the same model line. I have confidence Apple will get it sorted out, in fact five have been replaced in the Apple Store since last Wednesday.
Thankfully our new Nexus 6 models are all stellar. At least twenty of us use both Android and iOS. It's nice for variety and keeping current with our knowledge and skill on both platforms.