I have been using Silvercreek for the last 1.5 years for one of our clients. I found the SilverCreek tests very robust and exhaustive. In addition the rich set of APIs for SNMP and MIB test automation were very useful.
I want to give thanks specifically to the support team for the excellent and fast support provided. There response was unbelievably fast, bugs submitted were acknowledged and the feedback was proactive.
I am speaking from my own personal experience.
Hinjewadi, Pune INDIA