Here’s the deal. This phone is right up there with the best even before we consider its price.
If you absolutely need waterproofing, go for a Xperia, and you’ll be happy. If you’re a sucker for Samsung’s Alice In Wonderland saturated colours - go right ahead for it. If you absolutely positively believe the iPhone is the best, period, there’s nothing that will change your beliefs. But if you just want a great phone - you will be very happy with the OnePlus One.
I think 99% of people would be very, very happy with this brilliant, pleasant to hold and to use device.
And then take the price into account - top Android handsets are twice as expensive, the GB-for-GB, inch-for-inch equivalent iPhone 6 Plus costs THREE TIMES MORE. It just isn’t three times more phone, now is it?