I'm not sure about the new tall and narrow trend , I had look at a G6 in store comparing it to my G5 which I class as a medium sized phone and the G6 was even narrower , I might add , the G5 is the first and last smallish phone I will have , phablets are just easier to use for me.
As an old fart with big fingers and ageing eyes , larger screens are preferable , so I'm not entirely sure any of these trendy new models will fit the bill.
I will look at the S8 plus , I'm not confident though.
I do like the rest of what both LG and Samsung have done on their new models with camera's and water resistance.