All the MSDN Subscribers will have same access as “Basic level” but with some extra features. You can see more about the FAQ for Basic users over here
With regard to TestPlans there are couple of differences when compared with Basic users.
MSDN Subscribers with “Visual Studio Enterprise” & “VS Test Professional” will have access to
- Create,Edit and Delete TestPlans
- Clone,Move the Testcases from one TestPlan to another
- Create,Edit and Delete Suites
- Add TestCases to Suites
But Visual Studio Professional users won’t have access to any of the above.
If one has “TestPlans”access along with “Basic” access then they will have same access level like an Enterprise or VS TestProfessional users with regard to TestPlans