How does your organisation select a 3rd party workflow or BPM application for SharePoint?

Very cool Workflow Shootout video from the SharePoint European Conference 2011 featuring Nintex, K2 and Datapolis. All great 3rd party add ons. This area of the SharePoint universe just keeps getting better and more exciting.

SharePoint Workflow Shootout from Pawel Bujak on Vimeo.