Which SK Twink weapon over lvl 20?

[Hrothgaar]

Hi all!

I got told that until lvl 20, the Venomous Axe is the way to go but what about after lvl 20?

Here are the weapons I thought about:

Noctivagant Blade
Winters Fury
Sword of Skyfire
Frostbringer
Ebon Mace

Which one to pick past 20? Did I oversee a good alternative?
And last question: Sword of Skyfire is very cheap compared to the others, would it be worth tobpick one of the expensive ones OR invest for a (low) haste item, like CChitin Gloves.