I know it might be confusing since they named License Horribly Bad.
Personal License is for Individual/Company who is earning less the 100K UDS / year at the time of Purchase, and yes it can be used Commercially.
Professional License on the other hand is for Individuals/Company earning more then 100K / year
Regarding Company as End User, You have to expand that on what context and your Relation to that Company to decide which license will be best