I have both Octopus and Keyclone and love them both but I have been using Octopus exclusively for the past two months. The main reason I switched from keyclone is because I have a very big problem with software that requires me to validate against a server everytime I launch the app. If Keyclone disapears or his validation server goes down, then I am stuck with a software paperweight. With that said I do not regret paying keyclone for his great package but I have no reason to switch back after making the move to Octopus.