Think it's foolish to suggest the new Samsung phones aren't a huge threat right now. They clearly are with what they have brought out this year. Their sales Fiqures for Q1 shows this
I think Samsung have made some great hardware, don't get me wrong in that I will give credit where it's due. The S7 Edge looks nice and I've always been a fan of the note with the S pen, the reason I wouldn't switch to either of those tho is because of Andriod and Touchwiz. This is where I think IOS is much better, and with the rumoured dual camera feature in the iPhone 7 Plus or the rumoured iPhone Pro, it will be a must have upgrade for me.