I use Springpad for the simple fact that it synchronizes across all my computers/devices and lets me categorize my task a little better (work mode vs home mode)

I use Springpad for the simple fact that it synchronizes across all my computers/devices and lets me categorize my task a little better (work mode vs home mode). Springpad also benefits from other non-task related features though which is why I use it over more specific task list apps.