Overall Satisfaction with SharePoint Designer
We use SharePoint Designer to build complex business workflows to solve real business needs. It is being used at the department level to solve and automate department business needs. It allows SharePoint admins and site owners to easily see all site content, lists and libraries and manage them from the SharePoint Designer application. It also saves countless hours of document management and other tedious tasks by allowing the automation of many actions in SharePoint.
Both K2 and Nintex provide a powerful platform to build and run business applications that integrate seamlessly with SharePoint; business apps typically consist of workflow, forms, data and reports. The type of business apps range from simple document approval workflows to powerful business applications with complex forms that incorporates data from multiple systems with workflows that deliver the correct information to the right people to make the most effective business decisions, reducing cost, complexity and enabling a more agile business environment. SharePoint Designer from a workflow standpoint simply does not have these capabilities and is somewhat limited.