Regarding Nintex workflows
Overall I give 4 star as rating and I recommend that IT services consulting companies who want to execute their Notes to SharePoint migrations swiftly, need to buy this suite for faster execution and customer satisfaction.
Its been a wonderfull experience using this workflow suite and I have made complex State Machine workflows in the matter of hours. The learning curve is really less and an average person with limited IQ can start working on this and specialize.
c. So fascinated by Nintex workflows, I have written a 2 part series on integrating InfoPath and Nintex workflows together,
Part 1 covers step-by-step tutorial on Integrating InfoPath forms with Nintex workflows via Nintex OOTB web services.
Check it out: http://www.sharepointfix.com/2009/10/infopath-2007-form-and-nintex-workflows.html
Part 2 covers step-by-step tutorial on Deployment of browser enabled InfoPath forms as Content Types using the SharePoint feature framework.
Check it out: http://www.sharepointfix.com/2009/12/infopath-2007-form-and-nintex-workflows.html
The SharePoint Fix Team
b. UI is not flexible and has a lot of internal bugs which a user discovers when he starts working with Nintex.
c. Reminder Activity halts for 5-10 mins abruptly when used with Parallel actions.
d. Flexi Action Activity does not have a corresponding webservice to complete it programmatically.