I just finished importing a real set of data (100's of records) using DI, including a mix of Contacts with and without Accounts, 2nd HH members, and Donations. Once I got the hang of setting up DI - WOW, one click and you get a fully populated SF database. A giant time saver.
@David Habib, I have some detailed thoughts about DI that are too long for a post - shall I IM them to you?
