Depends on wat your going for.
Ill list the pros and cons for each
Pros: Extremely high energy cap
Is very good for mech that want to very quickly energy break somebody
Cons: Low heat, low health.
What this means is that for grim reaper your weapons should be less damaging and more energy focused, and you modules should be probably 4 heat modules, 2 health modules and 2 energy modules, give or take.
Pros: Good health, good energy, decent heat
Very balanced and neutral, no extremely low or high values.
Cons: Not as high energy as the grim reaper.
FOr this torso you would likely want a balance between high damaging energy weapons and high energy drain. Your modules should be 1 health modules, 4 heat modules and 3 energy.