The Ultimate Collection upgrade adds 3 key components, all of which add to the overall team's productivity, below are some notes on each of the added applications in the premium to ultimate upgrade:
Test Studio Express is a functional UI / regression test tool that will allow you to build powerful, automated tests against WPF based desktop application and any web based applications that generate HTML to the browser, including Silverlight. Test automation will reduce the overall cost of testing, shorten release cycles and lead to better overall software quality.
JustMock allows you to easily create mock objects for your unit tests. This allows your unit tests to be run easily in a controlled environment and without any changes to your code
JustTrace will help identify application bottlenecks to achieve optimal performance and memory usage for all your .net application.
Opting for the Ultimate Collection will provide your team with a set of tools to not only deliver robust applications, but to ensure they function as designed, remain stable and perform well.
the Telerik team