BClaws or Voidwaker?

Got mega spooned TD synapses, so my future plans are up in the air since I expected at least 1 of 2 claw pieces before getting Bow+Emberlight.

From reading various advice comments, BClaws and VW overlap usage in a lot of places. So assuming I'm only going for one, would you go for ~1k TD kills for BClaws, or Spindel+Callisto for VW (I have Calv piece currently)?

ty for any advice in advance