Trying to decide if I should replace my 4 VZW S5 phones with an S7, S7 Edge or the Nexus 6P. My only two concerns with phones are battery life and how quick does each screen load. Ever since I upgraded my S5 to Lollipop it has been slower than it was. My brother says the only difference between the S7 and the Edge is the screen in which case it is not worth it. Does anyone have real world experience with the S7 and 6P to tell me which has better battery life and which works faster when doing things on it? Thanks!