I'm looking for a recommendation for a good Mac Task Mgr app (or ToDo app). Nothing complex but the flexibility I need is the ability to create flexible views using Smart groups, the ability to select which fields to include and the ability to sort and group on several fields in the view. The task app in Outlook/Windows supports this so it's easy to create views for managing volunteer activities, phone call-back lists, etc. and I want to set up similar flexible lists on my Mac. Thanks in advance!