I love the Dawnguard Rune Axe it's just so epic with its AOE enchant, but if it is a normal weapon, glass sword and all ebony weapons, they all look so cool!!
Battleaxes. I honestly believe that the battleaxe family is the best looking across the board. they are just in the sweet spot for two handers as well between speed and damage. I love Wuuthrad, and the Stalhrim battleaxe in particular.