I can only think of 2 potentially good daggers consistently in the game, though with random drops and merchant inventories you may have better luck. Even with Assassin's Kiss maxed, though, there are swords readily available which will do more damage. If you want a pure survivor you can stick to daggers, but if you have a more practical style, you might want to switch to a sword.
BTW, if you put a skill point into Sword Expertise or Augment Damage (the starting skills for a male warrior), the first time you save and re-load they will be at level 2.