Definately bagnon but also Bartender and SUF! Only I know where my eyes search for info. Sometimes even I don't know now when I think of it.
Post your favorite or what you already have below!
Bagnon
Bagnon merges all of your bags into three windows: inventory, bank and guild bank. Beyond the basic all-in-one functionality.
Bagnon - Bags & Inventory - World of Warcraft Addons - Curse
SpartanUI
Is designed to free your screen by moving a majority of the interface elements to the bottom.
SpartanUI - WoW AddOns - CurseForge
Definately bagnon but also Bartender and SUF! Only I know where my eyes search for info. Sometimes even I don't know now when I think of it.