One Handed: Sword
Dual Wield: Sword and Dagger.
Same here, just like a true Renaissance duellist.
I'm also thinking about a simple Sword/sword combination :
If you max the critical perk, you get up to 30% critical chance with swords. So if you spam attacks, soon or late, you will land a critical and do big damage. Especially if you chose the perk that gives +40% damages with one handed weapons...