LFor plates the giant in grauberg has like half the hp,if that, of the other two giants. Mnk and whm make farming trigs and killing it a joke. If u had someone cap ur azure u could knock it out in two reasonable sessions.
As for the **** that is soul farming, I pray u have awesome friends. VNM convert rates are retarded. Before the "increased" t1 rate I never went more than 10 or 15, after, 1/49 1/51 1/34 1/39 1/35 1/29 1/3 and 1/22. That said, my two friends that helped never went worse than 1/5 on t1 and 1/1 on every t2 lol.
Drop rate increase on souls, however, was quite large. I farmed 30 souls pre-update. 3/6 ogo's 1/4 maeres and 2/14 brulos dropped 2. Post update 0/2 on ogo 6/6 on brulo and 13/18 maeres dropped 2.
As for killing em, ogo is a pushover. Use its atma and barwater. Brulo is the same deal pretty much, except I've been one-shotted by flaming crush with counterstance up, think it did 4200. Maere, on the other hand, is a flat out ****. I probably lost 15 pops, all in the 1st 30 secs. Best strat we figured out was an outside healer. After we dropped a healer outside, not once in 30 kills or so did they get drawn in.
Hope this helps!