The most important element of choosing the right level of protection is to understand the expected threat you will face whether you are a law enforcement officer working the streets or a combat operator facing heavy enemy opposition.  In general Level IIA, II, IIA will defeat most pistol or handgun rounds from low velocity up to high velocity.  Although for many years law enforcement officers have worn Level II armor, many agencies are moving to Level IIIA to provide the top level of protection for soft armor vests.  HighCom specifically focuses on the distribution of Level IIIA soft armor and Level III and Level IV hard armor.