It basically comes down to what you need of your phone if you liked your iPhone then stick to an iPhone but try getting another SE or a 6S, getting a 6 is actually a downgrade from your current phone and also have heard reports of them bending through use? I’ve used both Android and iPhone and I liked Android’s less restrictive OS a lot but at the end of the day the iPhone is very straightforward and integrates seamlessly in most peoples lives, well refined.