Speaking of Harvest, those yellow devourers are pretty rapey too - I haven't been able to find their base damage but I am assuming lightning or chaos. Nasty stuff T14+. I stopped doing them for now.
I know, all this is old news but the Noob just came back, and this thread has been pretty dead, so indulge me.
I found out today I still don't have the defense to do a T16 Vaal Temple. Came closer than I ever did before, but my DPS was not sufficient in comparison to theirs, especially as they went berzerk when others died.
Equipping my BF/BB Inq a bit, equipment is actually pretty cheap.