The choice between health and armor or magic resist depends on the types of damage you are facing. Buy mostly armor against physical, mostly magic resist against magic, and health against true damage. The two graphs below show the most gold efficient health to armor/magic resist ratios to achieve the highest effective health, when facing damage purely of one type (top) or when facing 50% physical/50% magic (bottom). This is meant ONLY AS A GUIDE, the equations represents efficiency under ideal conditions, penetration, reduction, %health damage, and health regen will all perturb this from ideal conditions.
Figure 1: Line of maximum gold efficiency of health vs armor/magic resist under ideal conditions, assuming either only physical or only m…Read more >