Quick Answer

When capacity is tight, do not judge only by rarity. Protect the cyberware that defines the build: OS for netrunners, mobility and survival for melee, stable damage and protection for gun builds. Comfort upgrades come after that.

Priority Table

SlotPriority Logic
Operating systemDefines hacking, time-slowing, or combat rhythm
LegsHelps traversal, stealth, melee, and escape
Circulatory / integumentaryRaises mistake tolerance
Hands / nervous systemSupports weapon type and crit routes