im dex build

@ lvl 15 i have 2 choices

15 - 85 dmg + 20 dex wep

or

15 - 135 dmg + 30 ed wep

whats better?

generally spoken, your first preference on a weapon for a melee character should always be enhanced effect to push the basic damage.
you can get the stat adds like dex or strength from your charm and armor still.

you can get quite helpful information for melee in general over here:

Thinking Of Melee? by JayKwik

Myaddiction's Melee Guide (v1.07) by MyAddiction

New Melee Build Guide by xshanksx