Estimated DPS gain from esoterics head: 20.66247
Estimated DPS gain from esoterics belt: 18.16585
Estimated DPS gain from esoterics legs: 17.73386
Estimated DPS gain from esoterics head + belt: 38.91160

Because you already have 210 pants, it will be a while before esoterics legs give you the best DPS increase per tomestone.