With SAS 9.4 you can apply for Base as well as advanced SAS Certification. If you are well versed with it go for Advanced Certification.
By "Enterprise certificate" do you mean Enterprise Guide or Enterprise Minner. Different SAS Certification program signify differnt types of knowledge within SAS. For eg. Enterprise Guide certificate will not convey that you are a expert in Base SAS coding and vice versa.
So i would suggest to go for a sample test for both Advanced and judge you level. Then go ahead with the certification.
-- Hope this Helps.