I have used DocuSign and Assure Sign before discovering EchoSign and once I discovered EchoSign there was no going back. The tech support for EchoSign has always been top notch. I can't go into much detail but I strongly feel that Adobe EchoSign gives us a competitive advantage over our competitor because of how easy it is to use and access from a client's point of view. EchoSign is easy to learn, train others on and gather the necessary information from clients and potential clients. Furthermore, we have so much time and resources wrapped up into EchoSign that the switching costs would be through the roof.