Greybeard Robes ftw.

I think they're unique enough but still look functional. The psijic ones are cool but look a little out of place for the setting...like they're too dainty/nice to be used in Skyrim. I can imagine a mage wearing those, then going dungeon diving, and traveling back to town through a raging snowstorm, and being like "%$ my fancy expensive robes are bloody, dirty, torn and faded!" lol
For light armor my favorite is the Forsworn armor. Yeah it's not the best protection quality but I love the wild, barbaric look to it.
Heavy armor for me is either Steel armor, for the sheer polished "Paladin" look, or Falmer armor (minus the helmet). It looks surprisingly stylish and sixy on a non-Falmer character...lol