Found this setup to be quite interesting. While I don't like doing it myself, it's always fun to see someone going max tank and see how far he can take it.
Captainlance9 GIGA Guardian PoB: https://pastebin.com/zH2JGWTQ
Life
19
Mana
59.76
Energy Shield
8719
DPS
9M
Effective Hit Pool
4.68M
Chaos Res
75
Fire Res
89
Cold Res
90
Lightning Res
90
Armour
100K
Evasion
42
Block
72 | 72
Crit Chance
88%
Crit Multi
305%
Rage
0
Strength
491
Intelligence
530
Dexterity
145
Ward
0
Item Quantity
0%
Item Rarity
0%
Movement Speed
78%