dagger or katar for dhans?

well it is a simple question. first we must discuss both weapons.

               dagger                                 katar

              attack speed: very fast                                         attack speed: very fast

              damage: lower than katar                                 damage: higher than dagger

              level req: lower than katar                                 level req: higher than dagger

conclusion: str dhans must use katars because of the higher damage and the 50 level buff "katar mastery".

                  agi dhans must use daggers because they don't need melee damage, so they aren't forced to spend much money on getting and refining katars, when they can get a dagger more easily and more chaeply

        finally there is not a big difference