The best thing about this toolkit so far has been its ease in handling different types of keys like symmetric & asymmetrical ones as well as certificates which can be handled easily by using sepioar APIs.
I have used it only once but i am sure if you use them regularly then they will help alot while managing your security issues related tasks. They also support various programming languages such as C# (NET), Java etc., So definitely go ahead! It's not much expensive too compared to other similar softwares available out there. As mentioned above we were facing some problems when dealing with our certificate files due to size limit restrictions imposed upon us from third party vendors who handle these certs during integration process between client apps & server side components.