So I got this nice 'problem' with a decent primal Shadow's Heel dropping, but I already have an okey:ish ancient... (no augments applied, as it's mainly an offspec for running GR85-95)
+650 Dex, +650 Vitality, Impale +15%
+12% Movement Speed
secondary: (+gold and health globe)
+557 Dex, +568 Vitality, Impale +15% (rerolled)
+119 All Resist
secondary: (+210 lightning resist and +gold)
Given my almost 1000 paragons and 1.955k sheet dmg, I would get the following changes if equipping the primal one:
+0,6% damage (up to 1,6% if keeping movement and changing paragons accordingly)
-4.1% toughness (slightly less if accounting for paragons as well, haven't bothered)
-11% recovery (due to not getting the health globe secondary)
My question: Is it worth swapping to the primal or should I stay with the ancient one? If I swap, should I stick with movement speed/paragons, or go for Armor or Life per Kill instead?
Well, since you're running Impale, the primal one would, of course, be better due to the movement speed.
If you already have plenty of speed and can't endure much then going for armor would be a possibility.
I prefer the primal one, that plus in dex and vit really helps