The differences with the DVD's are that they include every car for the years specified.
So all of the Ford, Lincoln, Mercury from 97-02 are in it. It has all the manuals for them as well (Service, Shop, Electrical) It also has all of the Recall information, TSB's, and repair instructions in them up to the Month of release. Mine was in Nov, 2001. So I have all the ones up till then. If you want to know what Ford knows then get this DVD. It has it all in there. Even Oasis interface 'IF' you can get an internet access number for it.
Well worth $20...