So I just reached the point in the Thieves Guild questline where I got my own Nightingale armor set. And boy does it look kick ass. My only complaint is the bonus on the hood (15% Illusion spell cost reduction) since I have zero use for it, and the other piece bonuses are amazing compared to it. Here's a pic (not mine):

What about you, found any set that you just keep in your bags to pull out every now and then to make you feel like a badass?

Man that makes me want to start my Dunmer rogue right now...

But my Orc still has stuff to do.

I just made a set of orcish armor, it's pretty cool. (level 15 12 hours in)

damn that thieves armor is looking cool.