Yeah I was thinking if I need it at Auto + 5 in daylight in Ireland - you had to have it as bright in jburg
I must try running my edge for a day on around 35% and see the difference. But generally I'm too lazy to manually adjust brightness other than at night hence leave it set on auto + 5 all the time.
You must also consider that the Note Edge has a battery that is 220mAh less than the Note 4, with the display being only being a tiny bit smaller, so our SOT is bound to differ a bit.
Do you know what I do if I know I am going to have a truly long day in meetings and presentations? I go to Power Saving -Restrict Performance and Tick on CPU Only, that can drive up SOT to well over 8hours and performance is not affected unless you play a heavy game.