its really on preference and you will get a lot of different options from everyone..
First the dinning plan does not cover all restaurants in wdw, just a selection of them. I would say if you are interested in going to a lot of table service restaurant, as well as / or using the dinning plan for a dinner show, the deluxe is good.. If though you want to grab something and run with maybe regular dining plan, 1 counter, 1 table, and 1 snack per night, per person..
For my trip i went with the Deluxe, mainly because we are going to a lot of the show / dinner combos, and well to be honest i really do want to do counter service thing.. Im lazy and like to be waited on..

.. I guess my main answer is what your family is more conferrable with..
Also please be warned depending on the time of year you really should have ADR's, esp if you are using deluxe dinning.. The only reason i say this is you may pay for the extra table service meals, and either waste time waiting for a restaurant to free up or be stuck going to counter service.