Rxbow Endgame build tweaks

[Redclaw1992]

Hi everybody, I've got a pure wf artificer that's been a blast to play. I'm pondering the idea of leaving it at lvl 32 even if it's a first life as it's super effective up to R4-R6 right now, and farm raid items and such.
I'm trying to optimize it as much as possible, and that's where I need advice.
Chose shiradi as primary ED ofc, with LD for action boosts and switching between fatesinger and shadowdancer (in the end went for the latter).
My question is the following: considering the sneak attack from SD, is it better to get Scion of Arborea or Scion of Ethereal Plane?

[PrinceOfAsphodel]

I always take Scion of the Ethereal Plane as ranged dps. I've never seen anyone take Arborea but it could be good. If you're an artificer, the 6 sneak attack dice Ethereal added to your sneak attack number will add more dps than the 15 extra ranged power from Arborea.