best approach for testing & multiple names

I need to assign request Owner ID based upon the contents of an SFDC field - VMA.  There are eight possible names in the VMA field and each needs a unique Owner ID value assigned. 

I'm looking for suggestions on the the best approach to test each possible name, assign a unique Owner ID when true and my Owner ID when none are true

The logic is:

When VMA = Annie then Owner ID = Annie#. When VMA=Tracey then Owner ID=Tracey#. When VMA=Drew then Owner ID=Drew#, ELSE Owner ID=SysAdmin#

Recommendations?