Singing Crystal AxeFollow

I was runnin around last night just questin my way to 70 when this bad boy dropped. Had to change my shorts when I looted it.

Singing Crystal Axe
Binds when equipped
Two-HandTwo-Hand Axe
295 - 444 DamageSpeed 3.50
(105.6 damage per second)
Requires Level 70
Chance On Hit: Increases your haste rating by 400 for 10 seconds.
I'm using this

Terokk's Quill
Binds when picked up
Two-HandPolearm
246 - 370 DamageSpeed 3.30
(93.3 damage per second)
+54 Agility
+33 Stamina
what would be the best enchant to put on it. I have 2k gold so money is not a problem.